Merge pull request #363 from binaricat/feat/osc52-clipboard

feat: add OSC-52 clipboard support

.github/workflows/build.yml

@@ -84,13 +84,14 @@ jobs:
             release/*.blockmap
           if-no-files-found: ignore
 
-  # Linux x64 — builds directly on ubuntu-latest (no container).
-  # v1.0.39 used a debian:bullseye container which broke native module
-  # packaging (node-pty .node file missing from asar.unpacked). Reverted
-  # to the v1.0.38 approach. See #264.
+  # Linux x64 — pin to ubuntu-22.04 for broader glibc compatibility.
+  # ubuntu-latest (24.04) links native modules against glibc 2.39 which
+  # can cause dlopen failures on some distros. 22.04 uses glibc 2.35,
+  # compatible with most current Linux distributions including Arch.
+  # See #264.
   build-linux-x64:
     name: build-linux-x64
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     env:
       VITE_SYNC_GITHUB_CLIENT_ID: ${{ secrets.VITE_SYNC_GITHUB_CLIENT_ID }}
       VITE_SYNC_GOOGLE_CLIENT_ID: ${{ secrets.VITE_SYNC_GOOGLE_CLIENT_ID }}

.gitignore

@@ -35,8 +35,8 @@ coverage
 *.sln
 *.sw?
 
-# Claude Code local settings
-/.claude/settings.local.json
+# Claude Code
+/.claude/
 /CLAUDE.md
 
 # AI / Superpowers generated docs (local only)

App.tsx

@@ -17,6 +17,7 @@ import { resolveHostAuth } from './domain/sshAuth';
 import { applySyncPayload } from './domain/syncPayload';
 import { getCredentialProtectionAvailability } from './infrastructure/services/credentialProtection';
 import { netcattyBridge } from './infrastructure/services/netcattyBridge';
+import { localStorageAdapter } from './infrastructure/persistence/localStorageAdapter';
 import { TopTabs } from './components/TopTabs';
 import { Button } from './components/ui/button';
 import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from './components/ui/dialog';
@@ -180,6 +181,12 @@ function App({ settings }: { settings: SettingsState }) {
     hotkeyScheme,
     keyBindings,
     isHotkeyRecording,
+    sftpDoubleClickBehavior,
+    sftpAutoSync,
+    sftpShowHiddenFiles,
+    sftpUseCompressedUpload,
+    editorWordWrap,
+    setEditorWordWrap,
     sessionLogsEnabled,
     sessionLogsDir,
     sessionLogsFormat,
@@ -286,10 +293,12 @@ function App({ settings }: { settings: SettingsState }) {
     snippetPackages,
     portForwardingRules: portForwardingRulesForSync,
     knownHosts,
+    settingsVersion: settings.settingsVersion,
     onApplyPayload: (payload) => {
       applySyncPayload(payload, {
         importVaultData: importDataFromString,
         importPortForwardingRules,
+        onSettingsApplied: settings.rehydrateAllFromStorage,
       });
     },
   });
@@ -314,6 +323,8 @@ function App({ settings }: { settings: SettingsState }) {
   useEffect(() => {
     // Skip "update available" toast if auto-download has already started or completed
     if (updateState.autoDownloadStatus !== 'idle') return;
+    // Don't show automatic notification when auto-update is disabled
+    if (localStorageAdapter.readString('netcatty_auto_update_enabled_v1') === 'false') return;
     if (updateState.hasUpdate && updateState.latestRelease) {
       const version = updateState.latestRelease.version;
       toast.info(
@@ -370,7 +381,7 @@ function App({ settings }: { settings: SettingsState }) {
 
   // Memoize keys for port forwarding to prevent unnecessary re-renders
   const portForwardingKeys = useMemo(
-    () => keys.map((k) => ({ id: k.id, privateKey: k.privateKey })),
+    () => keys.map((k) => ({ id: k.id, privateKey: k.privateKey, passphrase: k.passphrase, })),
     [keys]
   );
 
@@ -439,7 +450,7 @@ function App({ settings }: { settings: SettingsState }) {
         return;
       }
 
-      const keysForPf = keys.map((k) => ({ id: k.id, privateKey: k.privateKey }));
+      const keysForPf = keys.map((k) => ({ id: k.id, privateKey: k.privateKey, passphrase: k.passphrase }));
       if (start) {
         void startTunnel(rule, host, keysForPf, (status, error) => {
           if (status === "error" && error) toast.error(error);
@@ -1201,6 +1212,7 @@ function App({ settings }: { settings: SettingsState }) {
     <div className="flex flex-col h-screen text-foreground font-sans netcatty-shell" onContextMenu={handleRootContextMenu}>
       <TopTabs
         theme={resolvedTheme}
+        hosts={hosts}
         sessions={sessions}
         orphanSessions={orphanSessions}
         workspaces={workspaces}
@@ -1274,6 +1286,7 @@ function App({ settings }: { settings: SettingsState }) {
           keys={keys}
           identities={identities}
           snippets={snippets}
+          snippetPackages={snippetPackages}
           sessions={sessions}
           workspaces={workspaces}
           knownHosts={knownHosts}
@@ -1306,6 +1319,13 @@ function App({ settings }: { settings: SettingsState }) {
           onSplitSession={splitSession}
           isBroadcastEnabled={isBroadcastEnabled}
           onToggleBroadcast={toggleBroadcast}
+          updateHosts={updateHosts}
+          sftpDoubleClickBehavior={sftpDoubleClickBehavior}
+          sftpAutoSync={sftpAutoSync}
+          sftpShowHiddenFiles={sftpShowHiddenFiles}
+          sftpUseCompressedUpload={sftpUseCompressedUpload}
+          editorWordWrap={editorWordWrap}
+          setEditorWordWrap={setEditorWordWrap}
         />
 
         {/* Log Views - readonly terminal replays */}

application/i18n/locales/en.ts

@@ -34,6 +34,7 @@ const en: Messages = {
   'common.advanced': 'Advanced',
   'common.left': 'Left',
   'common.right': 'Right',
+  'common.more': 'More',
   'common.selectAHost': 'Select a host',
   'common.selectAHostPlaceholder': 'Select a host...',
   'sort.az': 'A-z',
@@ -49,6 +50,7 @@ const en: Messages = {
   // Dialogs / prompts
   'confirm.deleteHost': 'Delete Host "{name}"?',
   'confirm.deleteIdentity': 'Delete Identity "{name}"?',
+  'confirm.removeProvider': 'Remove provider "{name}"?',
   'dialog.createWorkspace.title': 'Create Workspace',
   'dialog.renameWorkspace.title': 'Rename workspace',
   'dialog.renameSession.title': 'Rename session',
@@ -113,6 +115,8 @@ const en: Messages = {
   'settings.update.lastCheckedMinutesAgo': '{n} min ago',
   'settings.update.lastCheckedHoursAgo': '{n} hr ago',
   'settings.update.lastCheckedPrefix': 'Last checked: ',
+  'settings.update.autoUpdateEnabled': 'Automatic Updates',
+  'settings.update.autoUpdateEnabledDesc': 'Automatically check and download updates when available.',
 
   // Settings > Session Logs
   'settings.sessionLogs.title': 'Session Logs',
@@ -140,6 +144,8 @@ const en: Messages = {
   'settings.globalHotkey.reset': 'Reset to default',
   'settings.globalHotkey.closeToTray': 'Close to System Tray',
   'settings.globalHotkey.closeToTrayDesc': 'When enabled, closing the window will minimize to the system tray instead of quitting.',
+  'settings.globalHotkey.enabled': 'Enable Global Hotkey',
+  'settings.globalHotkey.enabledDesc': 'Register system-wide keyboard shortcuts. When disabled, all global hotkeys are unregistered.',
   'settings.globalHotkey.hint': 'Global hotkey works system-wide to quickly show or hide the window (Quake-style terminal).',
 
   // Tray Panel
@@ -264,6 +270,17 @@ const en: Messages = {
   'settings.terminal.behavior.bracketedPaste': 'Bracketed paste mode',
   'settings.terminal.behavior.bracketedPaste.desc':
     'Wrap pasted text with escape sequences so the shell can distinguish paste from typed input. Disable if you see ^[[200~ artifacts.',
+  'settings.terminal.behavior.osc52Clipboard': 'OSC-52 clipboard',
+  'settings.terminal.behavior.osc52Clipboard.desc':
+    'Allow remote programs (tmux, vim, etc.) to access the local clipboard via OSC-52 escape sequences.',
+  'settings.terminal.behavior.osc52Clipboard.off': 'Disabled',
+  'settings.terminal.behavior.osc52Clipboard.writeOnly': 'Write only',
+  'settings.terminal.behavior.osc52Clipboard.readWrite': 'Read & Write',
+  'settings.terminal.behavior.osc52Clipboard.prompt': 'Write + Prompt on Read',
+  'terminal.osc52.readPrompt.title': 'Clipboard Read Request',
+  'terminal.osc52.readPrompt.desc': 'A remote program is requesting to read your clipboard. Allow?',
+  'terminal.osc52.readPrompt.allow': 'Allow',
+  'terminal.osc52.readPrompt.deny': 'Deny',
   'settings.terminal.behavior.scrollOnInput': 'Scroll on input',
   'settings.terminal.behavior.scrollOnInput.desc': 'Scroll terminal to bottom when typing',
   'settings.terminal.behavior.scrollOnOutput': 'Scroll on output',
@@ -595,7 +612,11 @@ const en: Messages = {
   'sftp.status.loading': 'Loading...',
   'sftp.status.uploading': 'Uploading...',
   'sftp.status.ready': 'Ready',
+  'sftp.transfers': 'Transfers',
+  'sftp.transfers.active': '{count} active',
+  'sftp.transfers.clearCompleted': 'Clear completed',
   'sftp.goUp': 'Go up',
+  'sftp.goToTerminalCwd': 'Go to terminal directory',
   'sftp.encoding.label': 'Filename Encoding',
   'sftp.encoding.auto': 'Auto',
   'sftp.encoding.utf8': 'UTF-8',
@@ -829,8 +850,8 @@ const en: Messages = {
   'hostDetails.certs.empty': 'No certificates available',
   'hostDetails.agentForwarding': 'Forward SSH Agent',
   'hostDetails.agentForwarding.desc': 'Allow remote server to use your local SSH keys (e.g., for git operations)',
-  'hostDetails.agentForwarding.agentNotRunning': 'SSH Agent is not running',
-  'hostDetails.agentForwarding.agentNotRunningHint': 'Enable OpenSSH Authentication Agent service in Windows Services (services.msc) for agent forwarding to work.',
+  'hostDetails.agentForwarding.agentNotRunning': 'SSH Agent is not available',
+  'hostDetails.agentForwarding.agentNotRunningHint': 'No SSH agent detected. Enable OpenSSH Authentication Agent in Windows Services, or use a compatible agent such as Bitwarden, 1Password, or gpg-agent.',
   'hostDetails.section.agentForwarding': 'SSH Agent',
   'hostDetails.section.legacyAlgorithms': 'Legacy Algorithms',
   'hostDetails.legacyAlgorithms': 'Allow Legacy Algorithms',
@@ -1121,6 +1142,7 @@ const en: Messages = {
   'cloudSync.webdav.password': 'Password',
   'cloudSync.webdav.token': 'Token',
   'cloudSync.webdav.showSecret': 'Show secret',
+  'cloudSync.webdav.allowInsecure': 'Allow insecure connection (ignore certificate errors)',
   'cloudSync.webdav.validation.endpoint': 'Enter a valid WebDAV endpoint.',
   'cloudSync.webdav.validation.credentials': 'Username and password are required.',
   'cloudSync.webdav.validation.token': 'Token is required.',
@@ -1472,6 +1494,148 @@ const en: Messages = {
 
   // Text Editor
   'sftp.editor.wordWrap': 'Word Wrap',
+
+  // AI Settings
+  'ai.agentSettings': 'Agent Settings',
+  'ai.title': 'AI',
+  'ai.description': 'Configure AI providers, agents, and safety settings',
+  'ai.providers': 'Providers',
+  'ai.providers.empty': 'No providers configured. Add a provider to get started.',
+  'ai.providers.add': 'Add Provider',
+  'ai.providers.active': 'Active',
+  'ai.providers.apiKeyConfigured': 'API key configured',
+  'ai.providers.noApiKey': 'No API key',
+  'ai.providers.configure': 'Configure',
+  'ai.providers.remove': 'Remove',
+  'ai.providers.name': 'Display Name',
+  'ai.providers.name.placeholder': 'e.g. My Provider',
+  'ai.providers.apiKey': 'API Key',
+  'ai.providers.apiKey.placeholder': 'Enter API key',
+  'ai.providers.apiKey.decrypting': 'Decrypting...',
+  'ai.providers.baseUrl': 'Base URL',
+  'ai.providers.defaultModel': 'Default Model',
+  'ai.providers.defaultModel.placeholder': 'e.g. gpt-4o, claude-sonnet-4-20250514',
+  'ai.providers.refreshModels': 'Refresh models',
+  'ai.providers.searchModel': 'Search or type model ID...',
+  'ai.providers.filterModels': 'Filter models...',
+  'ai.providers.loadingModels': 'Loading models...',
+  'ai.providers.noMatchingModels': 'No matching models',
+  'ai.providers.clickToLoadModels': 'Click to load models',
+  'ai.providers.showingModels': 'Showing first 100 of {count} models. Type to filter.',
+
+  // AI Codex
+  'ai.codex': 'Codex',
+  'ai.codex.title': 'Codex CLI',
+  'ai.codex.description': 'Uses codex + codex-acp for ACP protocol streaming. Login with ChatGPT subscription here, or configure an OpenAI provider API key (passed as CODEX_API_KEY).',
+  'ai.codex.detecting': 'Detecting...',
+  'ai.codex.notFound': 'Not found',
+  'ai.codex.awaitingLogin': 'Awaiting login',
+  'ai.codex.connectedChatGPT': 'Connected via ChatGPT',
+  'ai.codex.connectedApiKey': 'Connected via API key',
+  'ai.codex.notConnected': 'Not connected',
+  'ai.codex.statusUnknown': 'Status unknown',
+  'ai.codex.path': 'Path:',
+  'ai.codex.notFoundHint': 'Could not find codex in PATH. Install it or specify the executable path below.',
+  'ai.codex.customPathPlaceholder': 'e.g. /usr/local/bin/codex',
+  'ai.codex.check': 'Check',
+  'ai.codex.openLogin': 'Open Login',
+  'ai.codex.logout': 'Logout',
+  'ai.codex.connectChatGPT': 'Connect ChatGPT',
+  'ai.codex.refreshStatus': 'Refresh Status',
+  'ai.codex.apiKeyHint': 'Enabled OpenAI provider API key detected. Codex ACP can also authenticate without ChatGPT login.',
+
+  // AI Claude Code
+  'ai.claude.title': 'Claude Code',
+  'ai.claude.description': "Anthropic's agentic coding assistant. Uses claude-code-acp for ACP protocol streaming.",
+  'ai.claude.detecting': 'Detecting...',
+  'ai.claude.detected': 'Detected',
+  'ai.claude.notFound': 'Not found',
+  'ai.claude.path': 'Path:',
+  'ai.claude.notFoundHint': 'Could not find claude in PATH. Install it or specify the executable path below.',
+  'ai.claude.customPathPlaceholder': 'e.g. /usr/local/bin/claude',
+  'ai.claude.check': 'Check',
+
+  // AI Default Agent
+  'ai.defaultAgent': 'Default Agent',
+  'ai.defaultAgent.description': 'Agent to use when starting a new AI session',
+  'ai.defaultAgent.catty': 'Catty (Built-in)',
+
+  // AI Chat
+  'ai.chat.noProvider': 'No AI provider is configured. Go to **Settings → AI → Providers** to add and enable a provider.',
+  'ai.chat.toolDenied': 'Action was rejected by the user.',
+  'ai.chat.toolApprovalTitle': 'Permission Required',
+  'ai.chat.toolApproved': 'Approved',
+  'ai.chat.toolApprovalHint': 'Press Enter to approve, Escape to reject',
+  'ai.chat.approve': 'Approve',
+  'ai.chat.reject': 'Reject',
+  'ai.chat.toolLabel': 'Tool',
+  'ai.chat.targetLabel': 'Target',
+  'ai.chat.permissionRequired': 'Permission Required',
+  'ai.chat.permissionDescription': 'The AI agent wants to execute a tool call that requires your approval.',
+  'ai.chat.commandBlocked': 'This command is blocked by your security policy and cannot be executed.',
+  'ai.chat.recommendAllow': 'Allow',
+  'ai.chat.recommendConfirm': 'Confirm',
+  'ai.chat.recommendDeny': 'Deny',
+  'ai.chat.exportConversation': 'Export conversation',
+  'ai.chat.exportAs': 'Export As',
+  'ai.chat.exportMarkdown': 'Markdown',
+  'ai.chat.exportJSON': 'JSON',
+  'ai.chat.exportPlainText': 'Plain Text',
+  'ai.chat.thinking': 'Thinking',
+  'ai.chat.thoughtFor': 'Thought for {duration}',
+  'ai.chat.thought': 'Thought',
+  'ai.chat.agents': 'Agents',
+  'ai.chat.detectedOnMachine': 'Detected on this machine',
+  'ai.chat.rescan': 'Re-scan',
+  'ai.chat.permObserver': 'Observer',
+  'ai.chat.permConfirm': 'Confirm',
+  'ai.chat.permAuto': 'Auto',
+  'ai.chat.permObserverDesc': 'Read only',
+  'ai.chat.permConfirmDesc': 'Ask before actions',
+  'ai.chat.permAutoDesc': 'Execute freely',
+  'ai.chat.emptyHint': 'Ask about your servers, run commands, or get help with configurations.',
+  'ai.chat.placeholder': 'Message {agent} — @ to include context, / for commands',
+  'ai.chat.placeholderDefault': 'Message Catty Agent...',
+  'ai.chat.noModel': 'No model',
+  'ai.chat.recent': 'Recent',
+  'ai.chat.viewAll': 'View All',
+  'ai.chat.untitled': 'Untitled',
+  'ai.chat.justNow': 'Just now',
+  'ai.chat.minutesAgo': '{n}m ago',
+  'ai.chat.hoursAgo': '{n}h ago',
+  'ai.chat.daysAgo': '{n}d ago',
+  'ai.chat.newChat': 'New Chat',
+  'ai.chat.allSessions': 'All Sessions',
+  'ai.chat.noSessions': 'No previous sessions',
+  'ai.chat.retryHint': 'You can retry by sending your message again.',
+  'ai.chat.approvalTimeout': 'Tool approval timed out after 5 minutes. You can retry by sending your message again.',
+  'ai.chat.menuHosts': 'Hosts',
+  'ai.chat.menuContext': 'Context',
+  'ai.chat.menuFiles': 'Files',
+  'ai.chat.menuImage': 'Image',
+  'ai.chat.menuMentionHost': 'Mention Host',
+
+  // AI Error
+  'ai.codex.bridgeError': 'Codex main-process handlers are not loaded yet. Fully restart Netcatty, or restart the Electron dev process, then try again.',
+
+  // AI Safety Settings
+  'ai.safety.title': 'Safety',
+  'ai.safety.permissionMode': 'Permission Mode',
+  'ai.safety.permissionMode.description': 'Controls how the AI interacts with your terminals. Observer mode blocks all write operations via MCP Server, enforced for both built-in and ACP agents. Confirm mode is advisory for ACP agents (they control their own tool approval flow).',
+  'ai.safety.permissionMode.observer': 'Observer - Read only, no actions',
+  'ai.safety.permissionMode.confirm': 'Confirm - Ask before actions',
+  'ai.safety.permissionMode.autonomous': 'Autonomous - Execute freely',
+  'ai.safety.commandTimeout': 'Command Timeout',
+  'ai.safety.commandTimeout.description': 'Maximum seconds a command can run before being terminated. Applies to both built-in and ACP agents.',
+  'ai.safety.commandTimeout.unit': 'sec',
+  'ai.safety.maxIterations': 'Max Iterations',
+  'ai.safety.maxIterations.description': 'Maximum number of AI tool-use loops to prevent runaway execution. ACP agents may have their own internal iteration limits that take precedence.',
+  'ai.safety.blocklist': 'Command Blocklist',
+  'ai.safety.blocklist.description': 'Regex patterns to block dangerous commands. Applies to both built-in and ACP agents via MCP Server.',
+  'ai.safety.blocklist.placeholder': 'Regex pattern...',
+  'ai.safety.blocklist.reset': 'Reset to defaults',
+  'ai.safety.blocklist.add': 'Add pattern',
+  'ai.safety.note': 'Command Blocklist, Command Timeout, and Observer mode are enforced at the MCP Server level, applying to all agent types. Confirm mode and Max Iterations are fully enforced for the built-in agent; ACP agents may have their own internal controls for these settings.',
 };
 
 export default en;

application/i18n/locales/zh-CN.ts

@@ -22,6 +22,7 @@ const zhCN: Messages = {
   'common.use': '使用',
   'common.left': '左侧',
   'common.right': '右侧',
+  'common.more': '更多',
   'common.selectAHost': '选择主机',
   'sort.az': 'A-z',
   'sort.za': 'Z-a',
@@ -36,6 +37,7 @@ const zhCN: Messages = {
   // Dialogs / prompts
   'confirm.deleteHost': '删除主机 "{name}"？',
   'confirm.deleteIdentity': '删除身份 "{name}"？',
+  'confirm.removeProvider': '移除提供商 "{name}"？',
   'dialog.renameWorkspace.title': '重命名工作区',
   'dialog.renameSession.title': '重命名会话',
   'field.name': '名称',
@@ -97,6 +99,8 @@ const zhCN: Messages = {
   'settings.update.lastCheckedMinutesAgo': '{n} 分钟前',
   'settings.update.lastCheckedHoursAgo': '{n} 小时前',
   'settings.update.lastCheckedPrefix': '上次检查：',
+  'settings.update.autoUpdateEnabled': '自动更新',
+  'settings.update.autoUpdateEnabledDesc': '有新版本时自动检查并下载更新。',
 
   // Settings > Session Logs
   'settings.sessionLogs.title': '会话日志',
@@ -124,6 +128,8 @@ const zhCN: Messages = {
   'settings.globalHotkey.reset': '恢复默认',
   'settings.globalHotkey.closeToTray': '关闭时最小化到托盘',
   'settings.globalHotkey.closeToTrayDesc': '启用后，关闭窗口将最小化到系统托盘而不是退出程序。',
+  'settings.globalHotkey.enabled': '启用全局快捷键',
+  'settings.globalHotkey.enabledDesc': '注册系统级键盘快捷键。禁用后将取消所有全局快捷键注册。',
   'settings.globalHotkey.hint': '全局快捷键在系统范围内工作，可快速显示或隐藏窗口（下拉式终端风格）。',
 
   // Tray Panel
@@ -433,7 +439,11 @@ const zhCN: Messages = {
   'sftp.status.loading': '加载中...',
   'sftp.status.uploading': '上传中...',
   'sftp.status.ready': '就绪',
+  'sftp.transfers': '传输',
+  'sftp.transfers.active': '{count} 个进行中',
+  'sftp.transfers.clearCompleted': '清除已完成',
   'sftp.goUp': '上一级',
+  'sftp.goToTerminalCwd': '定位到终端当前目录',
   'sftp.encoding.label': '文件名编码',
   'sftp.encoding.auto': '自动',
   'sftp.encoding.utf8': 'UTF-8',
@@ -539,8 +549,8 @@ const zhCN: Messages = {
   'hostDetails.certs.empty': '暂无证书',
   'hostDetails.agentForwarding': '转发 SSH 密钥',
   'hostDetails.agentForwarding.desc': '允许远程服务器使用本地 SSH 密钥（例如用于 git 操作）',
-  'hostDetails.agentForwarding.agentNotRunning': 'SSH Agent 未运行',
-  'hostDetails.agentForwarding.agentNotRunningHint': '请在 Windows 服务管理器 (services.msc) 中启用 OpenSSH Authentication Agent 服务。',
+  'hostDetails.agentForwarding.agentNotRunning': 'SSH Agent 不可用',
+  'hostDetails.agentForwarding.agentNotRunningHint': '未检测到 SSH Agent。请启用 Windows OpenSSH Authentication Agent 服务，或使用兼容的 Agent（如 Bitwarden、1Password、gpg-agent）。',
   'hostDetails.section.agentForwarding': 'SSH 代理',
   'hostDetails.section.legacyAlgorithms': '旧版算法',
   'hostDetails.legacyAlgorithms': '允许旧版算法',
@@ -802,6 +812,7 @@ const zhCN: Messages = {
   'cloudSync.webdav.password': '密码',
   'cloudSync.webdav.token': 'Token',
   'cloudSync.webdav.showSecret': '显示密钥',
+  'cloudSync.webdav.allowInsecure': '允许不安全的连接（忽略证书错误）',
   'cloudSync.webdav.validation.endpoint': '请输入有效的 WebDAV 端点。',
   'cloudSync.webdav.validation.credentials': '请输入用户名和密码。',
   'cloudSync.webdav.validation.token': '请输入 Token。',
@@ -1135,6 +1146,17 @@ const zhCN: Messages = {
   'settings.terminal.behavior.bracketedPaste': '括号粘贴模式',
   'settings.terminal.behavior.bracketedPaste.desc':
     '粘贴文本时使用转义序列包裹，以便终端区分粘贴和键入。如果出现 ^[[200~ 字样请关闭此选项。',
+  'settings.terminal.behavior.osc52Clipboard': 'OSC-52 剪贴板',
+  'settings.terminal.behavior.osc52Clipboard.desc':
+    '允许远程程序（tmux、vim 等）通过 OSC-52 转义序列访问本地剪贴板。',
+  'settings.terminal.behavior.osc52Clipboard.off': '关闭',
+  'settings.terminal.behavior.osc52Clipboard.writeOnly': '仅写入',
+  'settings.terminal.behavior.osc52Clipboard.readWrite': '读写',
+  'settings.terminal.behavior.osc52Clipboard.prompt': '写入 + 读取时询问',
+  'terminal.osc52.readPrompt.title': '剪贴板读取请求',
+  'terminal.osc52.readPrompt.desc': '远程程序正在请求读取您的剪贴板，是否允许？',
+  'terminal.osc52.readPrompt.allow': '允许',
+  'terminal.osc52.readPrompt.deny': '拒绝',
   'settings.terminal.behavior.scrollOnInput': '输入时自动滚动',
   'settings.terminal.behavior.scrollOnInput.desc': '输入时将终端滚动到底部',
   'settings.terminal.behavior.scrollOnOutput': '输出时自动滚动',
@@ -1487,6 +1509,148 @@ const zhCN: Messages = {
 
   // Text Editor
   'sftp.editor.wordWrap': '自动换行',
+
+  // AI Settings
+  'ai.agentSettings': 'Agent 设置',
+  'ai.title': 'AI',
+  'ai.description': '配置 AI 提供商、Agent 和安全设置',
+  'ai.providers': '提供商',
+  'ai.providers.empty': '尚未配置提供商。添加一个提供商以开始使用。',
+  'ai.providers.add': '添加提供商',
+  'ai.providers.active': '活跃',
+  'ai.providers.apiKeyConfigured': 'API Key 已配置',
+  'ai.providers.noApiKey': '未设置 API Key',
+  'ai.providers.configure': '配置',
+  'ai.providers.remove': '移除',
+  'ai.providers.name': '显示名称',
+  'ai.providers.name.placeholder': '例如 我的提供商',
+  'ai.providers.apiKey': 'API Key',
+  'ai.providers.apiKey.placeholder': '输入 API Key',
+  'ai.providers.apiKey.decrypting': '解密中...',
+  'ai.providers.baseUrl': 'Base URL',
+  'ai.providers.defaultModel': '默认模型',
+  'ai.providers.defaultModel.placeholder': '例如 gpt-4o, claude-sonnet-4-20250514',
+  'ai.providers.refreshModels': '刷新模型列表',
+  'ai.providers.searchModel': '搜索或输入模型 ID...',
+  'ai.providers.filterModels': '筛选模型...',
+  'ai.providers.loadingModels': '加载模型中...',
+  'ai.providers.noMatchingModels': '没有匹配的模型',
+  'ai.providers.clickToLoadModels': '点击加载模型',
+  'ai.providers.showingModels': '显示前 100 个，共 {count} 个模型。输入以筛选。',
+
+  // AI Codex
+  'ai.codex': 'Codex',
+  'ai.codex.title': 'Codex CLI',
+  'ai.codex.description': '使用 codex + codex-acp 进行 ACP 协议流式传输。在此通过 ChatGPT 订阅登录，或配置 OpenAI 提供商的 API Key（将作为 CODEX_API_KEY 传递）。',
+  'ai.codex.detecting': '检测中...',
+  'ai.codex.notFound': '未找到',
+  'ai.codex.awaitingLogin': '等待登录',
+  'ai.codex.connectedChatGPT': '已通过 ChatGPT 连接',
+  'ai.codex.connectedApiKey': '已通过 API Key 连接',
+  'ai.codex.notConnected': '未连接',
+  'ai.codex.statusUnknown': '状态未知',
+  'ai.codex.path': '路径：',
+  'ai.codex.notFoundHint': '在 PATH 中未找到 codex。请安装或在下方指定可执行文件路径。',
+  'ai.codex.customPathPlaceholder': '例如 /usr/local/bin/codex',
+  'ai.codex.check': '检查',
+  'ai.codex.openLogin': '打开登录',
+  'ai.codex.logout': '退出登录',
+  'ai.codex.connectChatGPT': '连接 ChatGPT',
+  'ai.codex.refreshStatus': '刷新状态',
+  'ai.codex.apiKeyHint': '检测到已启用的 OpenAI 提供商 API Key。Codex ACP 也可以无需 ChatGPT 登录进行认证。',
+
+  // AI Claude Code
+  'ai.claude.title': 'Claude Code',
+  'ai.claude.description': 'Anthropic 的智能编程助手。使用 claude-code-acp 进行 ACP 协议流式传输。',
+  'ai.claude.detecting': '检测中...',
+  'ai.claude.detected': '已检测到',
+  'ai.claude.notFound': '未找到',
+  'ai.claude.path': '路径：',
+  'ai.claude.notFoundHint': '在 PATH 中未找到 claude。请安装或在下方指定可执行文件路径。',
+  'ai.claude.customPathPlaceholder': '例如 /usr/local/bin/claude',
+  'ai.claude.check': '检查',
+
+  // AI Default Agent
+  'ai.defaultAgent': '默认 Agent',
+  'ai.defaultAgent.description': '创建新 AI 会话时使用的 Agent',
+  'ai.defaultAgent.catty': 'Catty（内置）',
+
+  // AI Chat
+  'ai.chat.noProvider': '尚未配置 AI 提供商。请前往 **设置 → AI → 提供商** 添加并启用一个提供商。',
+  'ai.chat.toolDenied': '操作已被用户拒绝。',
+  'ai.chat.toolApprovalTitle': '需要权限确认',
+  'ai.chat.toolApproved': '已批准',
+  'ai.chat.toolApprovalHint': '按回车批准，按 Esc 拒绝',
+  'ai.chat.approve': '批准',
+  'ai.chat.reject': '拒绝',
+  'ai.chat.toolLabel': '工具',
+  'ai.chat.targetLabel': '目标',
+  'ai.chat.permissionRequired': '需要权限',
+  'ai.chat.permissionDescription': 'AI Agent 希望执行一个需要你批准的工具调用。',
+  'ai.chat.commandBlocked': '此命令已被安全策略拦截，无法执行。',
+  'ai.chat.recommendAllow': '允许',
+  'ai.chat.recommendConfirm': '确认',
+  'ai.chat.recommendDeny': '拒绝',
+  'ai.chat.exportConversation': '导出对话',
+  'ai.chat.exportAs': '导出为',
+  'ai.chat.exportMarkdown': 'Markdown',
+  'ai.chat.exportJSON': 'JSON',
+  'ai.chat.exportPlainText': '纯文本',
+  'ai.chat.thinking': '思考中',
+  'ai.chat.thoughtFor': '思考了 {duration}',
+  'ai.chat.thought': '思考',
+  'ai.chat.agents': 'Agents',
+  'ai.chat.detectedOnMachine': '在本机检测到',
+  'ai.chat.rescan': '重新扫描',
+  'ai.chat.permObserver': '观察',
+  'ai.chat.permConfirm': '确认',
+  'ai.chat.permAuto': '自主',
+  'ai.chat.permObserverDesc': '只读模式',
+  'ai.chat.permConfirmDesc': '操作前询问',
+  'ai.chat.permAutoDesc': '自由执行',
+  'ai.chat.emptyHint': '询问服务器相关问题、执行命令或获取配置帮助。',
+  'ai.chat.placeholder': '向 {agent} 发送消息 — @ 引用上下文，/ 使用命令',
+  'ai.chat.placeholderDefault': '向 Catty Agent 发送消息...',
+  'ai.chat.noModel': '未选择模型',
+  'ai.chat.recent': '最近',
+  'ai.chat.viewAll': '查看全部',
+  'ai.chat.untitled': '无标题',
+  'ai.chat.justNow': '刚刚',
+  'ai.chat.minutesAgo': '{n}分钟前',
+  'ai.chat.hoursAgo': '{n}小时前',
+  'ai.chat.daysAgo': '{n}天前',
+  'ai.chat.newChat': '新对话',
+  'ai.chat.allSessions': '所有会话',
+  'ai.chat.noSessions': '没有历史会话',
+  'ai.chat.retryHint': '你可以重新发送消息来重试。',
+  'ai.chat.approvalTimeout': '工具审批已超时（5 分钟）。你可以重新发送消息来重试。',
+  'ai.chat.menuHosts': '主机',
+  'ai.chat.menuContext': '上下文',
+  'ai.chat.menuFiles': '文件',
+  'ai.chat.menuImage': '图片',
+  'ai.chat.menuMentionHost': '提及主机',
+
+  // AI Error
+  'ai.codex.bridgeError': 'Codex 主进程处理器尚未加载。请完全重启 Netcatty 或重启 Electron 开发进程，然后重试。',
+
+  // AI Safety Settings
+  'ai.safety.title': '安全',
+  'ai.safety.permissionMode': '权限模式',
+  'ai.safety.permissionMode.description': '控制 AI 与终端的交互方式。观察者模式通过 MCP Server 阻止所有写操作，对内置和 ACP Agent 均生效。确认模式对 ACP Agent 仅为建议性（ACP Agent 有自己的工具审批流程）。',
+  'ai.safety.permissionMode.observer': '观察者 - 只读，禁止操作',
+  'ai.safety.permissionMode.confirm': '确认 - 操作前询问',
+  'ai.safety.permissionMode.autonomous': '自主 - 自由执行',
+  'ai.safety.commandTimeout': '命令超时',
+  'ai.safety.commandTimeout.description': '命令执行的最大秒数，超时将被终止。对内置和 ACP Agent 均生效。',
+  'ai.safety.commandTimeout.unit': '秒',
+  'ai.safety.maxIterations': '最大迭代次数',
+  'ai.safety.maxIterations.description': '防止 AI 失控执行的最大工具调用循环次数。ACP Agent 可能有自己的内部迭代限制，以其为准。',
+  'ai.safety.blocklist': '命令黑名单',
+  'ai.safety.blocklist.description': '用于拦截危险命令的正则表达式。通过 MCP Server 对内置和 ACP Agent 均生效。',
+  'ai.safety.blocklist.placeholder': '正则表达式...',
+  'ai.safety.blocklist.reset': '恢复默认',
+  'ai.safety.blocklist.add': '添加规则',
+  'ai.safety.note': '命令黑名单、命令超时和观察者模式通过 MCP Server 层强制执行，对所有 Agent 类型生效。确认模式和最大迭代次数对内置 Agent 完全强制执行；ACP Agent 可能有自己的内部控制。',
 };
 
 export default zhCN;

application/state/customThemeStore.ts

@@ -30,7 +30,8 @@ class CustomThemeStore {
         this.setupCrossWindowSync();
     }
 
-    private loadFromStorage = () => {
+    /** Reload themes from localStorage. Called internally and after sync apply. */
+    loadFromStorage = () => {
         try {
             const parsed = localStorageAdapter.read<TerminalTheme[]>(STORAGE_KEY_CUSTOM_THEMES);
             if (Array.isArray(parsed)) {
@@ -39,7 +40,7 @@ class CustomThemeStore {
         } catch {
             // ignore corrupt data
         }
-        this.cachedAllThemes = null; // invalidate cache
+        this.notify();
     };
 
     private saveToStorage = () => {

application/state/sftp/sharedRemoteHostCache.ts

@@ -0,0 +1,52 @@
+import type { SftpFileEntry, SftpFilenameEncoding } from "../../../domain/models";
+
+interface SharedRemoteHostCacheEntry {
+  path: string;
+  homeDir: string;
+  files: SftpFileEntry[];
+  filenameEncoding: SftpFilenameEncoding;
+  updatedAt: number;
+}
+
+const SHARED_REMOTE_HOST_CACHE_TTL_MS = 60_000;
+
+const sharedRemoteHostCache = new Map<string, SharedRemoteHostCacheEntry>();
+
+/**
+ * Build a cache key that includes connection details so that the same host ID
+ * with different session-time overrides (port, protocol) uses separate entries.
+ */
+export const buildCacheKey = (
+  hostId: string,
+  hostname?: string,
+  port?: number,
+  protocol?: string,
+  sftpSudo?: boolean,
+  username?: string,
+): string => {
+  return `${hostId}:${hostname ?? ''}:${port ?? ''}:${protocol ?? ''}:${sftpSudo ? 'sudo' : ''}:${username ?? ''}`;
+};
+
+export const getSharedRemoteHostCache = (
+  cacheKey: string,
+): SharedRemoteHostCacheEntry | null => {
+  const entry = sharedRemoteHostCache.get(cacheKey);
+  if (!entry) return null;
+
+  if (Date.now() - entry.updatedAt > SHARED_REMOTE_HOST_CACHE_TTL_MS) {
+    sharedRemoteHostCache.delete(cacheKey);
+    return null;
+  }
+
+  return entry;
+};
+
+export const setSharedRemoteHostCache = (
+  cacheKey: string,
+  entry: Omit<SharedRemoteHostCacheEntry, "updatedAt">,
+): void => {
+  sharedRemoteHostCache.set(cacheKey, {
+    ...entry,
+    updatedAt: Date.now(),
+  });
+};

application/state/sftp/types.ts

@@ -59,4 +59,5 @@ export interface SftpStateOptions {
   onFileWatchError?: (event: FileWatchErrorEvent) => void;
   useCompressedUpload?: boolean;
   defaultShowHiddenFiles?: boolean;
+  autoConnectLocalOnMount?: boolean;
 }

application/state/sftp/useSftpConnections.ts

@@ -5,6 +5,7 @@ import type { Host, Identity, SftpConnection, SftpFileEntry, SftpFilenameEncodin
 import type { SftpPane } from "./types";
 import { useSftpDirectoryListing } from "./useSftpDirectoryListing";
 import { useSftpHostCredentials } from "./useSftpHostCredentials";
+import { buildCacheKey, getSharedRemoteHostCache, setSharedRemoteHostCache } from "./sharedRemoteHostCache";
 
 interface UseSftpConnectionsParams {
   hosts: Host[];
@@ -24,14 +25,16 @@ interface UseSftpConnectionsParams {
   dirCacheRef: MutableRefObject<Map<string, { files: SftpFileEntry[]; timestamp: number }>>;
   sftpSessionsRef: MutableRefObject<Map<string, string>>;
   lastConnectedHostRef: MutableRefObject<{ left: Host | "local" | null; right: Host | "local" | null }>;
+  connectionCacheKeyMapRef: MutableRefObject<Map<string, string>>;
   reconnectingRef: MutableRefObject<{ left: boolean; right: boolean }>;
   makeCacheKey: (connectionId: string, path: string, encoding?: SftpFilenameEncoding) => string;
   clearCacheForConnection: (connectionId: string) => void;
   createEmptyPane: (id?: string, showHiddenFiles?: boolean) => SftpPane;
+  autoConnectLocalOnMount?: boolean;
 }
 
 interface UseSftpConnectionsResult {
-  connect: (side: "left" | "right", host: Host | "local") => Promise<void>;
+  connect: (side: "left" | "right", host: Host | "local", options?: { forceNewTab?: boolean }) => Promise<void>;
   disconnect: (side: "left" | "right") => Promise<void>;
   listLocalFiles: (path: string) => Promise<SftpFileEntry[]>;
   listRemoteFiles: (sftpId: string, path: string, encoding?: SftpFilenameEncoding) => Promise<SftpFileEntry[]>;
@@ -55,22 +58,24 @@ export const useSftpConnections = ({
   dirCacheRef,
   sftpSessionsRef,
   lastConnectedHostRef,
+  connectionCacheKeyMapRef,
   reconnectingRef,
   makeCacheKey,
   clearCacheForConnection,
   createEmptyPane,
+  autoConnectLocalOnMount = true,
 }: UseSftpConnectionsParams): UseSftpConnectionsResult => {
   const getHostCredentials = useSftpHostCredentials({ hosts, keys, identities });
   const { listLocalFiles, listRemoteFiles } = useSftpDirectoryListing();
 
   const connect = useCallback(
-    async (side: "left" | "right", host: Host | "local") => {
+    async (side: "left" | "right", host: Host | "local", options?: { forceNewTab?: boolean }) => {
       const setTabs = side === "left" ? setLeftTabs : setRightTabs;
 
       let activeTabId: string | null = null;
       const sideTabs = side === "left" ? leftTabsRef.current : rightTabsRef.current;
 
-      if (!sideTabs.activeTabId) {
+      if (!sideTabs.activeTabId || options?.forceNewTab) {
         const newPane = createEmptyPane();
         activeTabId = newPane.id;
         setTabs((prev) => ({
@@ -89,6 +94,14 @@ export const useSftpConnections = ({
       const connectRequestId = navSeqRef.current[side];
 
       lastConnectedHostRef.current[side] = host;
+      // Store the cache key for this connection so pane actions can look it up
+      // by connectionId instead of relying on the per-side lastConnectedHostRef.
+      if (host !== "local") {
+        connectionCacheKeyMapRef.current.set(
+          connectionId,
+          buildCacheKey(host.id, host.hostname, host.port, host.protocol, host.sftpSudo, host.username),
+        );
+      }
 
       const currentPane = getActivePane(side);
       // Reset encoding to host's configured encoding or "auto" when connecting to a new host
@@ -96,18 +109,22 @@ export const useSftpConnections = ({
       const filenameEncoding: SftpFilenameEncoding =
         host === "local" ? "auto" : (host.sftpEncoding ?? "auto");
 
-      if (currentPane?.connection) {
-        clearCacheForConnection(currentPane.connection.id);
-      }
-      if (currentPane?.connection && !currentPane.connection.isLocal) {
-        const oldSftpId = sftpSessionsRef.current.get(currentPane.connection.id);
-        if (oldSftpId) {
-          try {
-            await netcattyBridge.get()?.closeSftp(oldSftpId);
-          } catch {
-            // Ignore errors when closing stale SFTP sessions
+      // When forceNewTab is set, we're preserving the old tab for instant switching —
+      // don't close its SFTP session or clear its cache.
+      if (!options?.forceNewTab) {
+        if (currentPane?.connection) {
+          clearCacheForConnection(currentPane.connection.id);
+        }
+        if (currentPane?.connection && !currentPane.connection.isLocal) {
+          const oldSftpId = sftpSessionsRef.current.get(currentPane.connection.id);
+          if (oldSftpId) {
+            try {
+              await netcattyBridge.get()?.closeSftp(oldSftpId);
+            } catch {
+              // Ignore errors when closing stale SFTP sessions
+            }
+            sftpSessionsRef.current.delete(currentPane.connection.id);
           }
-          sftpSessionsRef.current.delete(currentPane.connection.id);
         }
       }
 
@@ -162,22 +179,33 @@ export const useSftpConnections = ({
           }));
         }
       } else {
+        const hostCacheKey = buildCacheKey(host.id, host.hostname, host.port, host.protocol, host.sftpSudo, host.username);
+        const sharedHostCacheCandidate = getSharedRemoteHostCache(hostCacheKey);
+        const sharedHostCache =
+          sharedHostCacheCandidate?.filenameEncoding === filenameEncoding
+            ? sharedHostCacheCandidate
+            : null;
+        const cachedStartPath = sharedHostCache?.path ?? "/";
+
         const connection: SftpConnection = {
           id: connectionId,
           hostId: host.id,
           hostLabel: host.label,
           isLocal: false,
           status: "connecting",
-          currentPath: "/",
+          currentPath: cachedStartPath,
         };
 
         updateTab(side, activeTabId, (prev) => ({
           ...prev,
           connection,
+          // Always show loading while connecting — even with cached files.
+          // The cached file list is shown as a preview, but the pane stays
+          // non-interactive until the SFTP session is actually established.
           loading: true,
           reconnecting: prev.reconnecting,
           error: null,
-          files: prev.reconnecting ? prev.files : [],
+          files: prev.reconnecting ? prev.files : (sharedHostCache?.files ?? []),
           filenameEncoding, // Reset encoding for new connection
         }));
 
@@ -238,72 +266,137 @@ export const useSftpConnections = ({
 
           sftpSessionsRef.current.set(connectionId, sftpId);
 
-          let startPath = "/";
-          const statSftp = netcattyBridge.get()?.statSftp;
-          if (statSftp) {
-            const candidates: string[] = [];
-            if (credentials.username === "root") {
-              candidates.push("/root");
-            } else if (credentials.username) {
-              candidates.push(`/home/${credentials.username}`);
-              candidates.push("/root");
-            } else {
-              candidates.push("/root");
-            }
-            for (const candidate of candidates) {
-              try {
-                const stat = await statSftp(sftpId, candidate, filenameEncoding);
-                if (stat?.type === "directory") {
-                  startPath = candidate;
-                  break;
+          let startPath = sharedHostCache?.path ?? "/";
+          let homeDir = sharedHostCache?.homeDir ?? startPath;
+
+          if (!sharedHostCache) {
+            const statSftp = netcattyBridge.get()?.statSftp;
+            if (statSftp) {
+              const candidates: string[] = [];
+              if (credentials.username === "root") {
+                candidates.push("/root");
+              } else if (credentials.username) {
+                candidates.push(`/home/${credentials.username}`);
+                candidates.push("/root");
+              } else {
+                candidates.push("/root");
+              }
+              for (const candidate of candidates) {
+                try {
+                  const stat = await statSftp(sftpId, candidate, filenameEncoding);
+                  if (stat?.type === "directory") {
+                    startPath = candidate;
+                    homeDir = candidate;
+                    break;
+                  }
+                } catch {
+                  // Ignore missing/permission errors
                 }
-              } catch {
-                // Ignore missing/permission errors
               }
-            }
-          } else {
-            if (credentials.username === "root") {
-              try {
-                const rootFiles = await netcattyBridge.get()?.listSftp(sftpId, "/root", filenameEncoding);
-                if (rootFiles) startPath = "/root";
-              } catch {
-                // Fallback path not available
-              }
-            } else if (credentials.username) {
-              try {
-                const homeFiles = await netcattyBridge.get()?.listSftp(
-                  sftpId,
-                  `/home/${credentials.username}`,
-                  filenameEncoding,
-                );
-                if (homeFiles) startPath = `/home/${credentials.username}`;
-              } catch {
-                // Fall through to /root check
-              }
-              if (startPath === "/") {
+            } else {
+              if (credentials.username === "root") {
                 try {
                   const rootFiles = await netcattyBridge.get()?.listSftp(sftpId, "/root", filenameEncoding);
-                  if (rootFiles) startPath = "/root";
+                  if (rootFiles) {
+                    startPath = "/root";
+                    homeDir = "/root";
+                  }
+                } catch {
+                  // Fallback path not available
+                }
+              } else if (credentials.username) {
+                try {
+                  const homeFiles = await netcattyBridge.get()?.listSftp(
+                    sftpId,
+                    `/home/${credentials.username}`,
+                    filenameEncoding,
+                  );
+                  if (homeFiles) {
+                    startPath = `/home/${credentials.username}`;
+                    homeDir = startPath;
+                  }
+                } catch {
+                  // Fall through to /root check
+                }
+                if (startPath === "/") {
+                  try {
+                    const rootFiles = await netcattyBridge.get()?.listSftp(sftpId, "/root", filenameEncoding);
+                    if (rootFiles) {
+                      startPath = "/root";
+                      homeDir = "/root";
+                    }
+                  } catch {
+                    // Fallback path not available
+                  }
+                }
+              } else {
+                try {
+                  const rootFiles = await netcattyBridge.get()?.listSftp(sftpId, "/root", filenameEncoding);
+                  if (rootFiles) {
+                    startPath = "/root";
+                    homeDir = "/root";
+                  }
                 } catch {
                   // Fallback path not available
                 }
               }
-            } else {
-              try {
-                const rootFiles = await netcattyBridge.get()?.listSftp(sftpId, "/root", filenameEncoding);
-                if (rootFiles) startPath = "/root";
-              } catch {
-                // Fallback path not available
-              }
             }
           }
 
-          const files = await listRemoteFiles(sftpId, startPath, filenameEncoding);
+          const provisionalCacheKey = sharedHostCache
+            ? makeCacheKey(connectionId, startPath, filenameEncoding)
+            : null;
+          if (sharedHostCache && provisionalCacheKey) {
+            dirCacheRef.current.set(provisionalCacheKey, {
+              files: sharedHostCache.files,
+              timestamp: Date.now(),
+            });
+          }
+
+          let files: SftpFileEntry[] = [];
+          try {
+            files = await listRemoteFiles(sftpId, startPath, filenameEncoding);
+          } catch {
+            // Cached path may be stale (deleted, permissions changed).
+            // Remove the provisional cache entry so phantom files don't resurface.
+            if (provisionalCacheKey) {
+              dirCacheRef.current.delete(provisionalCacheKey);
+            }
+            // Fall back to homeDir, then "/", chaining attempts.
+            let fallbackSucceeded = false;
+            if (sharedHostCache && startPath !== homeDir) {
+              try {
+                startPath = homeDir;
+                files = await listRemoteFiles(sftpId, startPath, filenameEncoding);
+                fallbackSucceeded = true;
+              } catch {
+                // homeDir also failed, try root
+              }
+            }
+            if (!fallbackSucceeded && startPath !== "/") {
+              try {
+                startPath = "/";
+                files = await listRemoteFiles(sftpId, startPath, filenameEncoding);
+                fallbackSucceeded = true;
+              } catch {
+                // root also failed
+              }
+            }
+            if (!fallbackSucceeded) {
+              throw new Error("Cannot list any remote directory");
+            }
+          }
           if (navSeqRef.current[side] !== connectRequestId) return;
           dirCacheRef.current.set(makeCacheKey(connectionId, startPath, filenameEncoding), {
             files,
             timestamp: Date.now(),
           });
+          setSharedRemoteHostCache(hostCacheKey, {
+            path: startPath,
+            homeDir,
+            files,
+            filenameEncoding,
+          });
 
           reconnectingRef.current[side] = false;
 
@@ -314,7 +407,7 @@ export const useSftpConnections = ({
                   ...prev.connection,
                   status: "connected",
                   currentPath: startPath,
-                  homeDir: startPath,
+                  homeDir,
                 }
               : null,
             files,
@@ -356,13 +449,17 @@ export const useSftpConnections = ({
   const initialConnectDoneRef = useRef(false);
 
   useEffect(() => {
-    if (!initialConnectDoneRef.current && leftTabs.tabs.length === 0) {
+    if (
+      autoConnectLocalOnMount &&
+      !initialConnectDoneRef.current &&
+      leftTabs.tabs.length === 0
+    ) {
       initialConnectDoneRef.current = true;
       setTimeout(() => {
         connect("left", "local");
       }, 0);
     }
-  }, [connect, leftTabs.tabs.length]);
+  }, [autoConnectLocalOnMount, connect, leftTabs.tabs.length]);
 
   useEffect(() => {
     const attemptReconnect = async (side: "left" | "right") => {

application/state/sftp/useSftpExternalOperations.ts

@@ -7,11 +7,13 @@ import { joinPath } from "./utils";
 import {
   UploadController,
   uploadFromDataTransfer,
+  uploadEntriesDirect,
   UploadBridge,
   UploadCallbacks,
   UploadResult,
   UploadTaskInfo,
 } from "../../../lib/uploadService";
+import type { DropEntry } from "../../../lib/sftpFileUtils";
 
 // Re-export UploadResult for external usage
 export type { UploadResult };
@@ -20,6 +22,8 @@ interface UseSftpExternalOperationsParams {
   getActivePane: (side: "left" | "right") => SftpPane | null;
   refresh: (side: "left" | "right") => Promise<void>;
   sftpSessionsRef: React.MutableRefObject<Map<string, string>>;
+  connectionCacheKeyMapRef: React.MutableRefObject<Map<string, string>>;
+  clearDirCacheEntry?: (connectionId: string, path: string) => void;
   useCompressedUpload?: boolean;
   addExternalUpload?: (task: TransferTask) => void;
   updateExternalUpload?: (taskId: string, updates: Partial<TransferTask>) => void;
@@ -38,10 +42,16 @@ interface SftpExternalOperationsResult {
     appPath: string,
     options?: { enableWatch?: boolean }
   ) => Promise<{ localTempPath: string; watchId?: string }>;
+  activeFileWatchCountRef: React.MutableRefObject<number>;
   uploadExternalFiles: (
     side: "left" | "right",
     dataTransfer: DataTransfer
   ) => Promise<UploadResult[]>;
+  uploadExternalEntries: (
+    side: "left" | "right",
+    entries: DropEntry[],
+    options?: { targetPath?: string }
+  ) => Promise<UploadResult[]>;
   cancelExternalUpload: () => Promise<void>;
   selectApplication: () => Promise<{ path: string; name: string } | null>;
 }
@@ -53,6 +63,8 @@ export const useSftpExternalOperations = (
     getActivePane,
     refresh,
     sftpSessionsRef,
+    connectionCacheKeyMapRef,
+    clearDirCacheEntry,
     useCompressedUpload = false,
     addExternalUpload,
     updateExternalUpload,
@@ -63,6 +75,10 @@ export const useSftpExternalOperations = (
   // Upload controller for cancellation support
   const uploadControllerRef = useRef<UploadController | null>(null);
 
+  // Track active file watches so the side panel can block host-switching.
+  // Reset to 0 when the SFTP session disconnects (handled in SftpSidePanel).
+  const activeFileWatchCountRef = useRef(0);
+
   const readTextFile = useCallback(
     async (side: "left" | "right", filePath: string): Promise<string> => {
       const pane = getActivePane(side);
@@ -324,6 +340,7 @@ export const useSftpExternalOperations = (
             pane.filenameEncoding,
           );
           watchId = result.watchId;
+          activeFileWatchCountRef.current += 1;
         } catch (err) {
           console.warn("[SFTP] Failed to start file watch:", err);
         }
@@ -337,7 +354,9 @@ export const useSftpExternalOperations = (
   // Create upload callbacks that translate to TransferTask updates
   const createUploadCallbacks = useCallback((
     connectionId: string,
-    targetPath: string
+    targetPath: string,
+    targetHostId?: string,
+    targetConnectionKey?: string,
   ): UploadCallbacks => {
     return {
       onScanningStart: (taskId: string) => {
@@ -349,6 +368,8 @@ export const useSftpExternalOperations = (
             targetPath,
             sourceConnectionId: "external",
             targetConnectionId: connectionId,
+            targetHostId,
+            targetConnectionKey,
             direction: "upload",
             status: "pending" as TransferStatus,
             totalBytes: 0,
@@ -374,6 +395,8 @@ export const useSftpExternalOperations = (
             targetPath: joinPath(targetPath, task.fileName),
             sourceConnectionId: "external",
             targetConnectionId: connectionId,
+            targetHostId,
+            targetConnectionKey,
             direction: "upload",
             status: "transferring" as TransferStatus,
             totalBytes: task.totalBytes,
@@ -505,7 +528,12 @@ export const useSftpExternalOperations = (
       const controller = new UploadController();
       uploadControllerRef.current = controller;
 
-      const callbacks = createUploadCallbacks(pane.connection.id, pane.connection.currentPath);
+      const callbacks = createUploadCallbacks(
+        pane.connection.id,
+        pane.connection.currentPath,
+        pane.connection.isLocal ? undefined : pane.connection.hostId,
+        pane.connection.isLocal ? undefined : connectionCacheKeyMapRef.current.get(pane.connection.id),
+      );
 
       try {
         const results = await uploadFromDataTransfer(
@@ -532,6 +560,7 @@ export const useSftpExternalOperations = (
       }
     },
     [
+      connectionCacheKeyMapRef,
       getActivePane,
       refresh,
       sftpSessionsRef,
@@ -541,6 +570,90 @@ export const useSftpExternalOperations = (
     ],
   );
 
+  const uploadExternalEntries = useCallback(
+    async (
+      side: "left" | "right",
+      entries: DropEntry[],
+      options?: { targetPath?: string },
+    ): Promise<UploadResult[]> => {
+      const pane = getActivePane(side);
+      if (!pane?.connection) {
+        throw new Error("No active connection");
+      }
+
+      const bridge = netcattyBridge.get();
+      if (!bridge) {
+        throw new Error("Bridge not available");
+      }
+
+      const sftpId = pane.connection.isLocal
+        ? null
+        : sftpSessionsRef.current.get(pane.connection.id) || null;
+
+      if (!pane.connection.isLocal && !sftpId) {
+        throw new Error("SFTP session not found");
+      }
+
+      const controller = new UploadController();
+      uploadControllerRef.current = controller;
+      const uploadTargetPath = options?.targetPath || pane.connection.currentPath;
+
+      const callbacks = createUploadCallbacks(
+        pane.connection.id,
+        uploadTargetPath,
+        pane.connection.isLocal ? undefined : pane.connection.hostId,
+        pane.connection.isLocal ? undefined : connectionCacheKeyMapRef.current.get(pane.connection.id),
+      );
+      const directUploadBridge: UploadBridge = {
+        ...createUploadBridge,
+      };
+
+      try {
+        const results = await uploadEntriesDirect(
+          entries,
+          {
+            targetPath: uploadTargetPath,
+            sftpId,
+            isLocal: pane.connection.isLocal,
+            bridge: directUploadBridge,
+            joinPath,
+            callbacks,
+            useCompressedUpload,
+          },
+          controller,
+        );
+
+        // Refresh the current directory and invalidate the upload target's
+        // cache entry.  If the user navigated away during the upload, the
+        // invalidation ensures returning to the target path triggers a fresh
+        // listing instead of serving stale cached data.
+        const livePane = getActivePane(side);
+        if (livePane?.connection) {
+          if (livePane.connection.currentPath !== uploadTargetPath && clearDirCacheEntry) {
+            clearDirCacheEntry(livePane.connection.id, uploadTargetPath);
+          }
+          await refresh(side);
+        }
+        return results;
+      } catch (error) {
+        logger.error("[SFTP] Upload failed:", error);
+        throw error;
+      } finally {
+        uploadControllerRef.current = null;
+      }
+    },
+    [
+      clearDirCacheEntry,
+      connectionCacheKeyMapRef,
+      createUploadCallbacks,
+      createUploadBridge,
+      getActivePane,
+      refresh,
+      sftpSessionsRef,
+      useCompressedUpload,
+    ],
+  );
+
   const cancelExternalUpload = useCallback(async () => {
     const controller = uploadControllerRef.current;
     if (controller) {
@@ -566,7 +679,9 @@ export const useSftpExternalOperations = (
     writeTextFile,
     downloadToTempAndOpen,
     uploadExternalFiles,
+    uploadExternalEntries,
     cancelExternalUpload,
     selectApplication,
+    activeFileWatchCountRef,
   };
 };

application/state/sftp/useSftpPaneActions.ts

@@ -4,8 +4,10 @@ import { netcattyBridge } from "../../../infrastructure/services/netcattyBridge"
 import { logger } from "../../../lib/logger";
 import { SftpPane } from "./types";
 import { getParentPath, isNavigableDirectory, isWindowsRoot, joinPath } from "./utils";
+import { buildCacheKey, setSharedRemoteHostCache } from "./sharedRemoteHostCache";
 
 interface UseSftpPaneActionsParams {
+  hosts: Host[];
   getActivePane: (side: "left" | "right") => SftpPane | null;
   updateTab: (side: "left" | "right", tabId: string, updater: (pane: SftpPane) => SftpPane) => void;
   updateActiveTab: (side: "left" | "right", updater: (pane: SftpPane) => SftpPane) => void;
@@ -15,6 +17,7 @@ interface UseSftpPaneActionsParams {
   dirCacheRef: React.MutableRefObject<Map<string, { files: SftpFileEntry[]; timestamp: number }>>;
   sftpSessionsRef: React.MutableRefObject<Map<string, string>>;
   lastConnectedHostRef: React.MutableRefObject<{ left: Host | "local" | null; right: Host | "local" | null }>;
+  connectionCacheKeyMapRef: React.MutableRefObject<Map<string, string>>;
   reconnectingRef: React.MutableRefObject<{ left: boolean; right: boolean }>;
   makeCacheKey: (connectionId: string, path: string, encoding?: SftpFilenameEncoding) => string;
   clearCacheForConnection: (connectionId: string) => void;
@@ -50,6 +53,7 @@ interface UseSftpPaneActionsResult {
 }
 
 export const useSftpPaneActions = ({
+  hosts,
   getActivePane,
   updateTab,
   updateActiveTab,
@@ -59,6 +63,7 @@ export const useSftpPaneActions = ({
   dirCacheRef,
   sftpSessionsRef,
   lastConnectedHostRef,
+  connectionCacheKeyMapRef,
   reconnectingRef,
   makeCacheKey,
   clearCacheForConnection,
@@ -68,6 +73,31 @@ export const useSftpPaneActions = ({
   isSessionError,
   dirCacheTtlMs,
 }: UseSftpPaneActionsParams): UseSftpPaneActionsResult => {
+  // Build the shared cache key for the active pane. Prefer the last connected
+  // host (which includes session-time overrides), fall back to the vault hosts list.
+  const hostsRef = useRef(hosts);
+  hostsRef.current = hosts;
+  const getActivePaneCacheKey = useCallback((side: "left" | "right", hostId: string, connectionId?: string): string => {
+    // Prefer the per-connection cache key — it's set at connect time and
+    // correctly identifies the endpoint even when multiple tabs share the
+    // same hostId with different session-time overrides.
+    if (connectionId) {
+      const perConnKey = connectionCacheKeyMapRef.current.get(connectionId);
+      if (perConnKey) return perConnKey;
+    }
+    // Fallback: lastConnectedHostRef (per-side, may be stale for multi-tab)
+    const connHost = lastConnectedHostRef.current[side];
+    if (connHost && connHost !== "local" && connHost.id === hostId) {
+      return buildCacheKey(connHost.id, connHost.hostname, connHost.port, connHost.protocol, connHost.sftpSudo, connHost.username);
+    }
+    // Fall back to vault host
+    const host = hostsRef.current.find(h => h.id === hostId);
+    if (host) {
+      return buildCacheKey(host.id, host.hostname, host.port, host.protocol, host.sftpSudo, host.username);
+    }
+    return hostId;
+  }, [connectionCacheKeyMapRef, lastConnectedHostRef]);
+
   // Track the latest navigation request ID per tab, so we can distinguish
   // whether a superseded request was superseded by the same tab or a different tab.
   const tabNavSeqRef = useRef(new Map<string, number>());
@@ -134,6 +164,19 @@ export const useSftpPaneActions = ({
           error: null,
           selectedFiles: new Set(),
         }));
+        if (!pane.connection.isLocal) {
+          // Use hostId as the shared cache key — this is safe because the
+          // shared cache is a best-effort optimization and hostId uniquely
+          // identifies the connection in the common case. Session-time
+          // overrides create separate connections with distinct cache keys
+          // at the connect() layer.
+          setSharedRemoteHostCache(getActivePaneCacheKey(side, pane.connection.hostId, pane.connection.id), {
+            path,
+            homeDir: pane.connection.homeDir ?? path,
+            files: cached.files,
+            filenameEncoding: pane.filenameEncoding,
+          });
+        }
         return;
       }
 
@@ -258,6 +301,14 @@ export const useSftpPaneActions = ({
           loading: false,
           selectedFiles: new Set(),
         }));
+        if (!pane.connection.isLocal) {
+          setSharedRemoteHostCache(getActivePaneCacheKey(side, pane.connection.hostId, pane.connection.id), {
+            path,
+            homeDir: pane.connection.homeDir ?? path,
+            files,
+            filenameEncoding: pane.filenameEncoding,
+          });
+        }
       } catch (err) {
         if (navSeqRef.current[side] !== requestId) {
           if (tabNavSeqRef.current.get(activeTabId) !== requestId) {
@@ -295,6 +346,7 @@ export const useSftpPaneActions = ({
     },
     [
       getActivePane,
+      getActivePaneCacheKey,
       updateTab,
       leftTabsRef,
       rightTabsRef,

application/state/useAIState.ts

@@ -0,0 +1,558 @@
+import { useCallback, useEffect, useRef, useState } from 'react';
+import { localStorageAdapter } from '../../infrastructure/persistence/localStorageAdapter';
+import {
+  STORAGE_KEY_AI_PROVIDERS,
+  STORAGE_KEY_AI_ACTIVE_PROVIDER,
+  STORAGE_KEY_AI_ACTIVE_MODEL,
+  STORAGE_KEY_AI_PERMISSION_MODE,
+  STORAGE_KEY_AI_HOST_PERMISSIONS,
+  STORAGE_KEY_AI_EXTERNAL_AGENTS,
+  STORAGE_KEY_AI_DEFAULT_AGENT,
+  STORAGE_KEY_AI_COMMAND_BLOCKLIST,
+  STORAGE_KEY_AI_COMMAND_TIMEOUT,
+  STORAGE_KEY_AI_MAX_ITERATIONS,
+  STORAGE_KEY_AI_SESSIONS,
+  STORAGE_KEY_AI_AGENT_MODEL_MAP,
+} from '../../infrastructure/config/storageKeys';
+import type {
+  AISession,
+  AIPermissionMode,
+  ProviderConfig,
+  HostAIPermission,
+  ExternalAgentConfig,
+  ChatMessage,
+  AISessionScope,
+} from '../../infrastructure/ai/types';
+import { DEFAULT_COMMAND_BLOCKLIST } from '../../infrastructure/ai/types';
+
+/** Typed accessor for the Electron IPC bridge exposed on `window.netcatty`. */
+function getAIBridge() {
+  return (window as unknown as { netcatty?: Record<string, (...args: unknown[]) => unknown> }).netcatty;
+}
+
+
+/** Maximum number of sessions to keep in localStorage. */
+const MAX_STORED_SESSIONS = 50;
+/** Maximum number of messages per session when persisting to localStorage. */
+const MAX_SESSION_MESSAGES = 200;
+
+/**
+ * Prune sessions before writing to localStorage to prevent hitting the
+ * ~5-10 MB storage quota. Only affects what is persisted — the in-memory
+ * state retains all messages until the session is reloaded.
+ *
+ * - Keeps only the MAX_STORED_SESSIONS most-recently-updated sessions.
+ * - Trims each session's messages to the last MAX_SESSION_MESSAGES.
+ */
+function pruneSessionsForStorage(sessions: AISession[]): AISession[] {
+  // Sort by updatedAt descending so we keep the newest
+  const sorted = [...sessions].sort((a, b) => b.updatedAt - a.updatedAt);
+  const limited = sorted.slice(0, MAX_STORED_SESSIONS);
+  return limited.map(s => {
+    if (s.messages.length > MAX_SESSION_MESSAGES) {
+      return { ...s, messages: s.messages.slice(-MAX_SESSION_MESSAGES) };
+    }
+    return s;
+  });
+}
+
+export function useAIState() {
+  // ── Provider Config ──
+  const [providers, setProvidersRaw] = useState<ProviderConfig[]>(() =>
+    localStorageAdapter.read<ProviderConfig[]>(STORAGE_KEY_AI_PROVIDERS) ?? []
+  );
+  const [activeProviderId, setActiveProviderIdRaw] = useState<string>(() =>
+    localStorageAdapter.readString(STORAGE_KEY_AI_ACTIVE_PROVIDER) ?? ''
+  );
+  const [activeModelId, setActiveModelIdRaw] = useState<string>(() =>
+    localStorageAdapter.readString(STORAGE_KEY_AI_ACTIVE_MODEL) ?? ''
+  );
+
+  // ── Permission Model ──
+  const [globalPermissionMode, setGlobalPermissionModeRaw] = useState<AIPermissionMode>(() => {
+    const stored = localStorageAdapter.readString(STORAGE_KEY_AI_PERMISSION_MODE);
+    if (stored === 'observer' || stored === 'confirm' || stored === 'autonomous') return stored;
+    return 'confirm';
+  });
+  const [hostPermissions, setHostPermissionsRaw] = useState<HostAIPermission[]>(() =>
+    localStorageAdapter.read<HostAIPermission[]>(STORAGE_KEY_AI_HOST_PERMISSIONS) ?? []
+  );
+
+  // ── External Agents ──
+  const [externalAgents, setExternalAgentsRaw] = useState<ExternalAgentConfig[]>(() =>
+    localStorageAdapter.read<ExternalAgentConfig[]>(STORAGE_KEY_AI_EXTERNAL_AGENTS) ?? []
+  );
+  const [defaultAgentId, setDefaultAgentIdRaw] = useState<string>(() =>
+    localStorageAdapter.readString(STORAGE_KEY_AI_DEFAULT_AGENT) ?? 'catty'
+  );
+
+  // ── Safety Settings ──
+  const [commandBlocklist, setCommandBlocklistRaw] = useState<string[]>(() =>
+    localStorageAdapter.read<string[]>(STORAGE_KEY_AI_COMMAND_BLOCKLIST) ?? [...DEFAULT_COMMAND_BLOCKLIST]
+  );
+  const [commandTimeout, setCommandTimeoutRaw] = useState<number>(() =>
+    localStorageAdapter.readNumber(STORAGE_KEY_AI_COMMAND_TIMEOUT) ?? 60
+  );
+  const [maxIterations, setMaxIterationsRaw] = useState<number>(() =>
+    localStorageAdapter.readNumber(STORAGE_KEY_AI_MAX_ITERATIONS) ?? 20
+  );
+
+  // ── Sessions ──
+  const [sessions, setSessionsRaw] = useState<AISession[]>(() =>
+    localStorageAdapter.read<AISession[]>(STORAGE_KEY_AI_SESSIONS) ?? []
+  );
+  // Ref that always holds the latest sessions for use inside debounced callbacks
+  const sessionsRef = useRef(sessions);
+  useEffect(() => {
+    sessionsRef.current = sessions;
+  }, [sessions]);
+  // Per-scope active session: keyed by `${scopeType}:${scopeTargetId}`
+  const [activeSessionIdMap, setActiveSessionIdMapRaw] = useState<Record<string, string | null>>({});
+
+  // Per-agent model selection: remembers last selected model per agent
+  const [agentModelMap, setAgentModelMapRaw] = useState<Record<string, string>>(() =>
+    localStorageAdapter.read<Record<string, string>>(STORAGE_KEY_AI_AGENT_MODEL_MAP) ?? {}
+  );
+
+  const setActiveSessionId = useCallback((scopeKey: string, id: string | null) => {
+    setActiveSessionIdMapRaw(prev => ({ ...prev, [scopeKey]: id }));
+  }, []);
+
+  const setAgentModel = useCallback((agentId: string, modelId: string) => {
+    setAgentModelMapRaw(prev => {
+      const next = { ...prev, [agentId]: modelId };
+      localStorageAdapter.write(STORAGE_KEY_AI_AGENT_MODEL_MAP, next);
+      return next;
+    });
+  }, []);
+
+  // ── Persist helpers ──
+  const setProviders = useCallback((value: ProviderConfig[] | ((prev: ProviderConfig[]) => ProviderConfig[])) => {
+    setProvidersRaw(prev => {
+      const next = typeof value === 'function' ? value(prev) : value;
+      localStorageAdapter.write(STORAGE_KEY_AI_PROVIDERS, next);
+      return next;
+    });
+  }, []);
+
+  const setActiveProviderId = useCallback((id: string) => {
+    setActiveProviderIdRaw(id);
+    localStorageAdapter.writeString(STORAGE_KEY_AI_ACTIVE_PROVIDER, id);
+  }, []);
+
+  const setActiveModelId = useCallback((id: string) => {
+    setActiveModelIdRaw(id);
+    localStorageAdapter.writeString(STORAGE_KEY_AI_ACTIVE_MODEL, id);
+  }, []);
+
+  const setGlobalPermissionMode = useCallback((mode: AIPermissionMode) => {
+    setGlobalPermissionModeRaw(mode);
+    localStorageAdapter.writeString(STORAGE_KEY_AI_PERMISSION_MODE, mode);
+    // Sync to MCP Server bridge (observer mode blocks write operations)
+    const bridge = getAIBridge();
+    bridge?.aiMcpSetPermissionMode?.(mode);
+  }, []);
+
+  const setHostPermissions = useCallback((value: HostAIPermission[] | ((prev: HostAIPermission[]) => HostAIPermission[])) => {
+    setHostPermissionsRaw(prev => {
+      const next = typeof value === 'function' ? value(prev) : value;
+      localStorageAdapter.write(STORAGE_KEY_AI_HOST_PERMISSIONS, next);
+      return next;
+    });
+  }, []);
+
+  const setExternalAgents = useCallback((value: ExternalAgentConfig[] | ((prev: ExternalAgentConfig[]) => ExternalAgentConfig[])) => {
+    setExternalAgentsRaw(prev => {
+      const next = typeof value === 'function' ? value(prev) : value;
+      localStorageAdapter.write(STORAGE_KEY_AI_EXTERNAL_AGENTS, next);
+      return next;
+    });
+  }, []);
+
+  const setDefaultAgentId = useCallback((id: string) => {
+    setDefaultAgentIdRaw(id);
+    localStorageAdapter.writeString(STORAGE_KEY_AI_DEFAULT_AGENT, id);
+  }, []);
+
+  const setCommandBlocklist = useCallback((value: string[]) => {
+    setCommandBlocklistRaw(value);
+    localStorageAdapter.write(STORAGE_KEY_AI_COMMAND_BLOCKLIST, value);
+    // Sync to MCP Server bridge so ACP agents also respect the blocklist
+    const bridge = getAIBridge();
+    bridge?.aiMcpSetCommandBlocklist?.(value);
+  }, []);
+
+  const setCommandTimeout = useCallback((value: number) => {
+    setCommandTimeoutRaw(value);
+    localStorageAdapter.writeNumber(STORAGE_KEY_AI_COMMAND_TIMEOUT, value);
+    // Sync to MCP Server bridge
+    const bridge = getAIBridge();
+    bridge?.aiMcpSetCommandTimeout?.(value);
+  }, []);
+
+  const setMaxIterations = useCallback((value: number) => {
+    setMaxIterationsRaw(value);
+    localStorageAdapter.writeNumber(STORAGE_KEY_AI_MAX_ITERATIONS, value);
+    // Sync to MCP Server bridge (used by ACP agent path)
+    const bridge = getAIBridge();
+    bridge?.aiMcpSetMaxIterations?.(value);
+  }, []);
+
+  // ── Cross-window sync via storage events ──
+  // When the settings window updates localStorage, the main window picks up changes.
+  useEffect(() => {
+    const handleStorage = (e: StorageEvent) => {
+      try {
+        switch (e.key) {
+          case STORAGE_KEY_AI_PROVIDERS: {
+            const parsed = localStorageAdapter.read<ProviderConfig[]>(STORAGE_KEY_AI_PROVIDERS);
+            if (parsed != null && !Array.isArray(parsed)) {
+              console.warn('[useAIState] Cross-window sync: AI_PROVIDERS is not an array, skipping');
+              break;
+            }
+            setProvidersRaw(parsed ?? []);
+            break;
+          }
+          case STORAGE_KEY_AI_ACTIVE_PROVIDER:
+            setActiveProviderIdRaw(localStorageAdapter.readString(STORAGE_KEY_AI_ACTIVE_PROVIDER) ?? '');
+            break;
+          case STORAGE_KEY_AI_ACTIVE_MODEL:
+            setActiveModelIdRaw(localStorageAdapter.readString(STORAGE_KEY_AI_ACTIVE_MODEL) ?? '');
+            break;
+          case STORAGE_KEY_AI_PERMISSION_MODE: {
+            const mode = localStorageAdapter.readString(STORAGE_KEY_AI_PERMISSION_MODE);
+            if (mode === 'observer' || mode === 'confirm' || mode === 'autonomous') {
+              setGlobalPermissionModeRaw(mode);
+              getAIBridge()?.aiMcpSetPermissionMode?.(mode);
+            }
+            break;
+          }
+          case STORAGE_KEY_AI_EXTERNAL_AGENTS: {
+            const agents = localStorageAdapter.read<ExternalAgentConfig[]>(STORAGE_KEY_AI_EXTERNAL_AGENTS);
+            if (agents != null && !Array.isArray(agents)) {
+              console.warn('[useAIState] Cross-window sync: AI_EXTERNAL_AGENTS is not an array, skipping');
+              break;
+            }
+            setExternalAgentsRaw(agents ?? []);
+            break;
+          }
+          case STORAGE_KEY_AI_DEFAULT_AGENT:
+            setDefaultAgentIdRaw(localStorageAdapter.readString(STORAGE_KEY_AI_DEFAULT_AGENT) ?? 'catty');
+            break;
+          case STORAGE_KEY_AI_COMMAND_BLOCKLIST: {
+            const list = localStorageAdapter.read<string[]>(STORAGE_KEY_AI_COMMAND_BLOCKLIST);
+            if (list != null && !Array.isArray(list)) {
+              console.warn('[useAIState] Cross-window sync: AI_COMMAND_BLOCKLIST is not an array, skipping');
+              break;
+            }
+            const blocklist = list ?? [...DEFAULT_COMMAND_BLOCKLIST];
+            setCommandBlocklistRaw(blocklist);
+            getAIBridge()?.aiMcpSetCommandBlocklist?.(blocklist);
+            break;
+          }
+          case STORAGE_KEY_AI_COMMAND_TIMEOUT: {
+            const timeout = localStorageAdapter.readNumber(STORAGE_KEY_AI_COMMAND_TIMEOUT) ?? 60;
+            if (!Number.isFinite(timeout)) {
+              console.warn('[useAIState] Cross-window sync: AI_COMMAND_TIMEOUT is not a finite number, skipping');
+              break;
+            }
+            setCommandTimeoutRaw(timeout);
+            getAIBridge()?.aiMcpSetCommandTimeout?.(timeout);
+            break;
+          }
+          case STORAGE_KEY_AI_MAX_ITERATIONS: {
+            const iters = localStorageAdapter.readNumber(STORAGE_KEY_AI_MAX_ITERATIONS) ?? 20;
+            if (!Number.isFinite(iters)) {
+              console.warn('[useAIState] Cross-window sync: AI_MAX_ITERATIONS is not a finite number, skipping');
+              break;
+            }
+            setMaxIterationsRaw(iters);
+            getAIBridge()?.aiMcpSetMaxIterations?.(iters);
+            break;
+          }
+          case STORAGE_KEY_AI_HOST_PERMISSIONS: {
+            const perms = localStorageAdapter.read<HostAIPermission[]>(STORAGE_KEY_AI_HOST_PERMISSIONS);
+            if (perms != null && !Array.isArray(perms)) {
+              console.warn('[useAIState] Cross-window sync: AI_HOST_PERMISSIONS is not an array, skipping');
+              break;
+            }
+            setHostPermissionsRaw(perms ?? []);
+            break;
+          }
+          case STORAGE_KEY_AI_AGENT_MODEL_MAP:
+            setAgentModelMapRaw(localStorageAdapter.read<Record<string, string>>(STORAGE_KEY_AI_AGENT_MODEL_MAP) ?? {});
+            break;
+        }
+      } catch (err) {
+        console.warn('[useAIState] Cross-window sync: failed to process storage event for key', e.key, err);
+      }
+    };
+    window.addEventListener('storage', handleStorage);
+    return () => window.removeEventListener('storage', handleStorage);
+  }, []);
+
+  // ── Sync initial safety settings to MCP Server on mount ──
+  useEffect(() => {
+    const bridge = getAIBridge();
+    const initialBlocklist = localStorageAdapter.read<string[]>(STORAGE_KEY_AI_COMMAND_BLOCKLIST) ?? [...DEFAULT_COMMAND_BLOCKLIST];
+    bridge?.aiMcpSetCommandBlocklist?.(initialBlocklist);
+    const initialTimeout = localStorageAdapter.readNumber(STORAGE_KEY_AI_COMMAND_TIMEOUT) ?? 60;
+    bridge?.aiMcpSetCommandTimeout?.(initialTimeout);
+    const initialMaxIter = localStorageAdapter.readNumber(STORAGE_KEY_AI_MAX_ITERATIONS) ?? 20;
+    bridge?.aiMcpSetMaxIterations?.(initialMaxIter);
+    const initialPermMode = localStorageAdapter.readString(STORAGE_KEY_AI_PERMISSION_MODE) ?? 'confirm';
+    bridge?.aiMcpSetPermissionMode?.(initialPermMode);
+  }, []);
+
+  // ── Session CRUD ──
+  const persistSessions = useCallback((next: AISession[]) => {
+    localStorageAdapter.write(STORAGE_KEY_AI_SESSIONS, pruneSessionsForStorage(next));
+  }, []);
+
+  // Debounced version of persistSessions for high-frequency updates (e.g. streaming)
+  const persistTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
+  const mountedRef = useRef(true);
+
+  const debouncedPersistSessions = useCallback(() => {
+    if (persistTimerRef.current) clearTimeout(persistTimerRef.current);
+    persistTimerRef.current = setTimeout(() => {
+      if (!mountedRef.current) return; // Skip writes after unmount
+      localStorageAdapter.write(STORAGE_KEY_AI_SESSIONS, pruneSessionsForStorage(sessionsRef.current));
+      persistTimerRef.current = null;
+    }, 500);
+  }, []);
+
+  // Flush pending debounced writes on unmount
+  useEffect(() => {
+    mountedRef.current = true;
+    return () => {
+      mountedRef.current = false;
+      if (persistTimerRef.current) {
+        clearTimeout(persistTimerRef.current);
+        persistTimerRef.current = null;
+        persistSessions(sessionsRef.current);
+      }
+    };
+  }, [persistSessions]);
+
+  const createSession = useCallback((scope: AISessionScope, agentId?: string): AISession => {
+    const now = Date.now();
+    const session: AISession = {
+      id: `ai_${now}_${Math.random().toString(36).slice(2, 8)}`,
+      title: 'New Chat',
+      agentId: agentId || defaultAgentId,
+      scope,
+      messages: [],
+      createdAt: now,
+      updatedAt: now,
+    };
+    setSessionsRaw(prev => {
+      const next = [session, ...prev];
+      persistSessions(next);
+      return next;
+    });
+    const scopeKey = `${scope.type}:${scope.targetId ?? ''}`;
+    setActiveSessionId(scopeKey, session.id);
+    return session;
+  }, [defaultAgentId, persistSessions, setActiveSessionId]);
+
+  const deleteSession = useCallback((sessionId: string, scopeKey?: string) => {
+    if (persistTimerRef.current) {
+      clearTimeout(persistTimerRef.current);
+      persistTimerRef.current = null;
+    }
+    setSessionsRaw(prev => {
+      const next = prev.filter(s => s.id !== sessionId);
+      persistSessions(next);
+      return next;
+    });
+    if (scopeKey) {
+      setActiveSessionIdMapRaw(prev => {
+        if (prev[scopeKey] === sessionId) return { ...prev, [scopeKey]: null };
+        return prev;
+      });
+    }
+  }, [persistSessions]);
+
+  const deleteSessionsByTarget = useCallback((scopeType: 'terminal' | 'workspace', targetId: string) => {
+    if (persistTimerRef.current) {
+      clearTimeout(persistTimerRef.current);
+      persistTimerRef.current = null;
+    }
+    setSessionsRaw(prev => {
+      const next = prev.filter(s => {
+        return !(s.scope.type === scopeType && s.scope.targetId === targetId);
+      });
+      persistSessions(next);
+      return next;
+    });
+    const scopeKey = `${scopeType}:${targetId}`;
+    setActiveSessionIdMapRaw(prev => {
+      if (prev[scopeKey] != null) return { ...prev, [scopeKey]: null };
+      return prev;
+    });
+  }, [persistSessions]);
+
+  const updateSessionTitle = useCallback((sessionId: string, title: string) => {
+    setSessionsRaw(prev => {
+      const next = prev.map(s => s.id === sessionId ? { ...s, title, updatedAt: Date.now() } : s);
+      persistSessions(next);
+      return next;
+    });
+  }, [persistSessions]);
+
+  // Maximum messages per session to prevent unbounded memory growth
+  const MAX_MESSAGES_PER_SESSION = 500;
+
+  const addMessageToSession = useCallback((sessionId: string, message: ChatMessage) => {
+    setSessionsRaw(prev => {
+      const next = prev.map(s => {
+        if (s.id !== sessionId) return s;
+        let msgs = [...s.messages, message];
+        // Trim oldest messages if exceeding limit (keep system messages)
+        if (msgs.length > MAX_MESSAGES_PER_SESSION) {
+          const systemMsgs = msgs.filter(m => m.role === 'system');
+          const nonSystemMsgs = msgs.filter(m => m.role !== 'system');
+          const dropped = nonSystemMsgs.length - (MAX_MESSAGES_PER_SESSION - systemMsgs.length);
+          console.warn(`[useAIState] Session ${sessionId}: trimmed ${dropped} oldest non-system message(s) to stay within ${MAX_MESSAGES_PER_SESSION} limit`);
+          msgs = [...systemMsgs, ...nonSystemMsgs.slice(-MAX_MESSAGES_PER_SESSION + systemMsgs.length)];
+        }
+        return { ...s, messages: msgs, updatedAt: Date.now() };
+      });
+      debouncedPersistSessions();
+      return next;
+    });
+  }, [debouncedPersistSessions]);
+
+  const updateLastMessage = useCallback((sessionId: string, updater: (msg: ChatMessage) => ChatMessage) => {
+    setSessionsRaw(prev => {
+      const next = prev.map(s => {
+        if (s.id !== sessionId || s.messages.length === 0) return s;
+        const msgs = [...s.messages];
+        msgs[msgs.length - 1] = updater(msgs[msgs.length - 1]);
+        return { ...s, messages: msgs, updatedAt: Date.now() };
+      });
+      debouncedPersistSessions();
+      return next;
+    });
+  }, [debouncedPersistSessions]);
+
+  const updateMessageById = useCallback((sessionId: string, messageId: string, updater: (msg: ChatMessage) => ChatMessage) => {
+    setSessionsRaw(prev => {
+      const next = prev.map(s => {
+        if (s.id !== sessionId) return s;
+        const idx = s.messages.findIndex(m => m.id === messageId);
+        if (idx === -1) return s;
+        const msgs = [...s.messages];
+        msgs[idx] = updater(msgs[idx]);
+        return { ...s, messages: msgs, updatedAt: Date.now() };
+      });
+      debouncedPersistSessions();
+      return next;
+    });
+  }, [debouncedPersistSessions]);
+
+  const clearSessionMessages = useCallback((sessionId: string) => {
+    if (persistTimerRef.current) {
+      clearTimeout(persistTimerRef.current);
+      persistTimerRef.current = null;
+    }
+    setSessionsRaw(prev => {
+      const next = prev.map(s => s.id === sessionId ? { ...s, messages: [], updatedAt: Date.now() } : s);
+      persistSessions(next);
+      return next;
+    });
+  }, [persistSessions]);
+
+  const cleanupOrphanedSessions = useCallback((activeTargetIds: Set<string>) => {
+    setSessionsRaw(prev => {
+      const next = prev.filter(s => {
+        // Keep sessions without a targetId (global scope)
+        if (!s.scope.targetId) return true;
+        // Keep sessions whose target still exists
+        return activeTargetIds.has(s.scope.targetId);
+      });
+      if (next.length !== prev.length) {
+        persistSessions(next);
+      }
+      return next;
+    });
+  }, [persistSessions]);
+
+  // ── Provider CRUD helpers ──
+  const addProvider = useCallback((provider: ProviderConfig) => {
+    setProviders(prev => [...prev, provider]);
+  }, [setProviders]);
+
+  const updateProvider = useCallback((id: string, updates: Partial<ProviderConfig>) => {
+    setProviders(prev => prev.map(p => p.id === id ? { ...p, ...updates } : p));
+  }, [setProviders]);
+
+  const removeProvider = useCallback((id: string) => {
+    setProviders(prev => prev.filter(p => p.id !== id));
+    // Use the raw setter to avoid stale closure over setActiveProviderId
+    setActiveProviderIdRaw(prevId => {
+      if (prevId === id) {
+        const next = '';
+        localStorageAdapter.writeString(STORAGE_KEY_AI_ACTIVE_PROVIDER, next);
+        return next;
+      }
+      return prevId;
+    });
+  }, [setProviders]);
+
+  // ── Computed ──
+  const activeProvider = providers.find(p => p.id === activeProviderId) ?? null;
+
+  return {
+    // Provider config
+    providers,
+    setProviders,
+    addProvider,
+    updateProvider,
+    removeProvider,
+    activeProviderId,
+    setActiveProviderId,
+    activeModelId,
+    setActiveModelId,
+    activeProvider,
+
+    // Permission model
+    globalPermissionMode,
+    setGlobalPermissionMode,
+    hostPermissions,
+    setHostPermissions,
+
+    // External agents
+    externalAgents,
+    setExternalAgents,
+    defaultAgentId,
+    setDefaultAgentId,
+
+    // Safety
+    commandBlocklist,
+    setCommandBlocklist,
+    commandTimeout,
+    setCommandTimeout,
+    maxIterations,
+    setMaxIterations,
+
+    // Per-agent model memory
+    agentModelMap,
+    setAgentModel,
+
+    // Sessions (per-scope active session)
+    sessions,
+    activeSessionIdMap,
+    setActiveSessionId,
+    createSession,
+    deleteSession,
+    deleteSessionsByTarget,
+    updateSessionTitle,
+    addMessageToSession,
+    updateLastMessage,
+    updateMessageById,
+    clearSessionMessages,
+    cleanupOrphanedSessions,
+  };
+}

application/state/useAgentDiscovery.ts

@@ -0,0 +1,101 @@
+import { useCallback, useEffect, useState } from 'react';
+import type { DiscoveredAgent, ExternalAgentConfig } from '../../infrastructure/ai/types';
+
+interface NetcattyBridge {
+  aiDiscoverAgents(): Promise<DiscoveredAgent[]>;
+}
+
+function getBridge(): NetcattyBridge | undefined {
+  return (window as unknown as { netcatty?: NetcattyBridge }).netcatty;
+}
+
+export function useAgentDiscovery(
+  externalAgents: ExternalAgentConfig[],
+  setExternalAgents?: (value: ExternalAgentConfig[] | ((prev: ExternalAgentConfig[]) => ExternalAgentConfig[])) => void,
+) {
+  const [discoveredAgents, setDiscoveredAgents] = useState<DiscoveredAgent[]>([]);
+  const [isDiscovering, setIsDiscovering] = useState(false);
+
+  const discover = useCallback(async () => {
+    const bridge = getBridge();
+    if (!bridge) return;
+
+    setIsDiscovering(true);
+    try {
+      const agents = await bridge.aiDiscoverAgents();
+      setDiscoveredAgents(agents);
+    } catch (err) {
+      console.error('Agent discovery failed:', err);
+    } finally {
+      setIsDiscovering(false);
+    }
+  }, []);
+
+  // Discover on mount
+  useEffect(() => {
+    discover();
+  }, [discover]);
+
+  // Auto-update args for already-configured discovered agents when
+  // the canonical args from discovery change (e.g. after an app update).
+  useEffect(() => {
+    if (!setExternalAgents || discoveredAgents.length === 0) return;
+
+    setExternalAgents((prev) => {
+      let changed = false;
+      const next = prev.map((ea) => {
+        // Only update agents that were auto-discovered (id starts with "discovered_")
+        if (!ea.id.startsWith('discovered_')) return ea;
+
+        const match = discoveredAgents.find(
+          (da) => ea.command === da.path || ea.command === da.command,
+        );
+        if (!match) return ea;
+
+        // Check if args or ACP config differ
+        const currentArgs = JSON.stringify(ea.args || []);
+        const newArgs = JSON.stringify(match.args);
+        const acpChanged = ea.acpCommand !== match.acpCommand
+          || JSON.stringify(ea.acpArgs || []) !== JSON.stringify(match.acpArgs || []);
+        if (currentArgs !== newArgs || acpChanged) {
+          changed = true;
+          return { ...ea, args: match.args, acpCommand: match.acpCommand, acpArgs: match.acpArgs };
+        }
+        return ea;
+      });
+      return changed ? next : prev;
+    });
+  }, [discoveredAgents, setExternalAgents]);
+
+  // Filter out agents that are already configured as external agents
+  const unconfiguredAgents = discoveredAgents.filter(
+    (da) => !externalAgents.some(
+      (ea) => ea.command === da.command || ea.command === da.path,
+    ),
+  );
+
+  // Build ExternalAgentConfig from a discovered agent
+  const enableAgent = useCallback(
+    (agent: DiscoveredAgent): ExternalAgentConfig => {
+      return {
+        id: `discovered_${agent.command}`,
+        name: agent.name,
+        command: agent.path || agent.command,
+        args: agent.args,
+        icon: agent.icon,
+        enabled: true,
+        acpCommand: agent.acpCommand,
+        acpArgs: agent.acpArgs,
+      };
+    },
+    [],
+  );
+
+  return {
+    discoveredAgents,
+    unconfiguredAgents,
+    isDiscovering,
+    rediscover: discover,
+    enableAgent,
+  };
+}

application/state/useAutoSync.ts

@@ -16,8 +16,10 @@ import {
   findSyncPayloadEncryptedCredentialPaths,
 } from '../../domain/credentials';
 import { isProviderReadyForSync, type CloudProvider, type SyncPayload } from '../../domain/sync';
+import { collectSyncableSettings } from '../../domain/syncPayload';
 import { STORAGE_KEY_PORT_FORWARDING } from '../../infrastructure/config/storageKeys';
 import { localStorageAdapter } from '../../infrastructure/persistence/localStorageAdapter';
+import { getEffectiveKnownHosts } from '../../infrastructure/syncHelpers';
 import { toast } from '../../components/ui/toast';
 
 interface AutoSyncConfig {
@@ -30,7 +32,9 @@ interface AutoSyncConfig {
   snippetPackages?: SyncPayload['snippetPackages'];
   portForwardingRules?: SyncPayload['portForwardingRules'];
   knownHosts?: SyncPayload['knownHosts'];
-  
+  /** Opaque token that changes whenever a synced setting changes. */
+  settingsVersion?: number;
+
   // Callbacks
   onApplyPayload: (payload: SyncPayload) => void;
 }
@@ -52,12 +56,8 @@ export const useAutoSync = (config: AutoSyncConfig) => {
   const lastSyncedDataRef = useRef<string>('');
   const hasCheckedRemoteRef = useRef(false);
   const isInitializedRef = useRef(false);
-  
-  // Build sync payload
-  const buildPayload = useCallback((): SyncPayload => {
-    // If port-forwarding hook state is still [] (async init in progress),
-    // fall back to localStorage to avoid uploading an empty array that
-    // overwrites the cloud snapshot.
+
+  const getSyncSnapshot = useCallback(() => {
     let effectivePFRules = config.portForwardingRules;
     if (!effectivePFRules || effectivePFRules.length === 0) {
       const stored = localStorageAdapter.read<SyncPayload['portForwardingRules']>(
@@ -72,6 +72,9 @@ export const useAutoSync = (config: AutoSyncConfig) => {
         }));
       }
     }
+
+    const effectiveKnownHosts = getEffectiveKnownHosts(config.knownHosts);
+
     return {
       hosts: config.hosts,
       keys: config.keys,
@@ -80,40 +83,32 @@ export const useAutoSync = (config: AutoSyncConfig) => {
       customGroups: config.customGroups,
       snippetPackages: config.snippetPackages,
       portForwardingRules: effectivePFRules,
-      knownHosts: config.knownHosts,
+      knownHosts: effectiveKnownHosts,
+    };
+  }, [
+    config.hosts,
+    config.keys,
+    config.identities,
+    config.snippets,
+    config.customGroups,
+    config.snippetPackages,
+    config.portForwardingRules,
+    config.knownHosts,
+  ]);
+
+  // Build sync payload
+  const buildPayload = useCallback((): SyncPayload => {
+    return {
+      ...getSyncSnapshot(),
+      settings: collectSyncableSettings(),
       syncedAt: Date.now(),
     };
-  }, [config.hosts, config.keys, config.identities, config.snippets, config.customGroups, config.snippetPackages, config.portForwardingRules, config.knownHosts]);
+  }, [getSyncSnapshot]);
   
-  // Create a hash of current data for comparison
+  // Create a hash of current data for comparison (includes settings)
   const getDataHash = useCallback(() => {
-    // Same fallback as buildPayload
-    let effectivePFRules = config.portForwardingRules;
-    if (!effectivePFRules || effectivePFRules.length === 0) {
-      const stored = localStorageAdapter.read<SyncPayload['portForwardingRules']>(
-        STORAGE_KEY_PORT_FORWARDING,
-      );
-      if (stored && Array.isArray(stored) && stored.length > 0) {
-        effectivePFRules = stored.map((rule) => ({
-          ...rule,
-          status: 'inactive' as const,
-          error: undefined,
-          lastUsedAt: undefined,
-        }));
-      }
-    }
-    const data = {
-      hosts: config.hosts,
-      keys: config.keys,
-      identities: config.identities,
-      snippets: config.snippets,
-      customGroups: config.customGroups,
-      snippetPackages: config.snippetPackages,
-      portForwardingRules: effectivePFRules,
-      knownHosts: config.knownHosts,
-    };
-    return JSON.stringify(data);
-  }, [config.hosts, config.keys, config.identities, config.snippets, config.customGroups, config.snippetPackages, config.portForwardingRules, config.knownHosts]);
+    return JSON.stringify({ ...getSyncSnapshot(), settings: collectSyncableSettings() });
+  }, [getSyncSnapshot]);
   
   // Sync now handler - get fresh state directly from manager
   const syncNow = useCallback(async (options?: SyncNowOptions) => {
@@ -130,6 +125,10 @@ export const useAutoSync = (config: AutoSyncConfig) => {
         throw new Error(t('sync.autoSync.noProvider'));
       }
       if (syncing) {
+        if (trigger === 'auto') {
+          console.info('[AutoSync] Skipping overlapping auto-sync because another sync is already running.');
+          return;
+        }
         throw new Error(t('sync.autoSync.alreadySyncing'));
       }
 
@@ -151,6 +150,7 @@ export const useAutoSync = (config: AutoSyncConfig) => {
         throw new Error(t('sync.autoSync.vaultLocked'));
       }
 
+      const dataHash = getDataHash();
       const payload = buildPayload();
       const encryptedCredentialPaths = findSyncPayloadEncryptedCredentialPaths(payload);
       if (encryptedCredentialPaths.length > 0) {
@@ -169,7 +169,7 @@ export const useAutoSync = (config: AutoSyncConfig) => {
         }
       }
 
-      lastSyncedDataRef.current = getDataHash();
+      lastSyncedDataRef.current = dataHash;
     } catch (error) {
       if (trigger === 'manual') {
         throw error;
@@ -236,6 +236,12 @@ export const useAutoSync = (config: AutoSyncConfig) => {
     if (currentHash === lastSyncedDataRef.current) {
       return;
     }
+
+    // Wait for the current sync to finish, then this effect will re-run
+    // because sync.isSyncing changed.
+    if (sync.isSyncing) {
+      return;
+    }
     
     // Clear existing timeout
     if (syncTimeoutRef.current) {
@@ -253,7 +259,7 @@ export const useAutoSync = (config: AutoSyncConfig) => {
         clearTimeout(syncTimeoutRef.current);
       }
     };
-  }, [sync.hasAnyConnectedProvider, sync.autoSyncEnabled, sync.isUnlocked, getDataHash, syncNow]);
+  }, [sync.hasAnyConnectedProvider, sync.autoSyncEnabled, sync.isUnlocked, sync.isSyncing, getDataHash, syncNow, config.settingsVersion]);
   
   // Check remote version on startup/unlock
   useEffect(() => {

application/state/useImageUpload.ts

@@ -0,0 +1,66 @@
+/**
+ * useImageUpload - Handle image paste/drop with base64 conversion
+ *
+ * Ported from 1code's use-agents-file-upload.ts
+ */
+import { useCallback, useState } from 'react';
+
+export interface UploadedImage {
+  id: string;
+  filename: string;
+  dataUrl: string;      // data:image/...;base64,... for preview
+  base64Data: string;   // raw base64 for API
+  mediaType: string;    // MIME type e.g. "image/png"
+}
+
+async function fileToDataUrl(file: File): Promise<{ dataUrl: string; base64: string }> {
+  return new Promise((resolve, reject) => {
+    const reader = new FileReader();
+    reader.onloadend = () => {
+      const dataUrl = reader.result as string;
+      const base64 = dataUrl.split(',')[1] || '';
+      resolve({ dataUrl, base64 });
+    };
+    reader.onerror = reject;
+    reader.readAsDataURL(file);
+  });
+}
+
+export function useImageUpload() {
+  const [images, setImages] = useState<UploadedImage[]>([]);
+
+  const addImages = useCallback(async (files: File[]) => {
+    const imageFiles = files.filter((f) => f.type.startsWith('image/'));
+    if (imageFiles.length === 0) return;
+
+    const newImages: UploadedImage[] = await Promise.all(
+      imageFiles.map(async (file) => {
+        const id = crypto.randomUUID();
+        const filename = file.name || `screenshot-${Date.now()}.png`;
+        const mediaType = file.type || 'image/png';
+        let dataUrl = '';
+        let base64Data = '';
+        try {
+          const result = await fileToDataUrl(file);
+          dataUrl = result.dataUrl;
+          base64Data = result.base64;
+        } catch (err) {
+          console.error('[useImageUpload] Failed to convert:', err);
+        }
+        return { id, filename, dataUrl, base64Data, mediaType };
+      }),
+    );
+
+    setImages((prev) => [...prev, ...newImages]);
+  }, []);
+
+  const removeImage = useCallback((id: string) => {
+    setImages((prev) => prev.filter((i) => i.id !== id));
+  }, []);
+
+  const clearImages = useCallback(() => {
+    setImages([]);
+  }, []);
+
+  return { images, addImages, removeImage, clearImages };
+}

application/state/usePortForwardingAutoStart.ts

@@ -17,7 +17,7 @@ import { logger } from "../../lib/logger";
 
 export interface UsePortForwardingAutoStartOptions {
   hosts: Host[];
-  keys: { id: string; privateKey: string }[];
+  keys: { id: string; privateKey: string; passphrase: string }[];
 }
 
 /**
@@ -30,7 +30,7 @@ export const usePortForwardingAutoStart = ({
 }: UsePortForwardingAutoStartOptions): void => {
   const autoStartExecutedRef = useRef(false);
   const hostsRef = useRef<Host[]>(hosts);
-  const keysRef = useRef<{ id: string; privateKey: string }[]>(keys);
+  const keysRef = useRef<{ id: string; privateKey: string; passphrase: string }[]>(keys);
 
   // Keep refs in sync
   useEffect(() => {

application/state/usePortForwardingState.ts

@@ -63,7 +63,7 @@ export interface UsePortForwardingStateResult {
   startTunnel: (
     rule: PortForwardingRule,
     host: Host,
-    keys: { id: string; privateKey: string }[],
+    keys: { id: string; privateKey: string; passphrase: string }[],
     onStatusChange?: (status: PortForwardingRule["status"], error?: string) => void,
     enableReconnect?: boolean,
   ) => Promise<{ success: boolean; error?: string }>;
@@ -377,7 +377,7 @@ export const usePortForwardingState = (): UsePortForwardingStateResult => {
     async (
       rule: PortForwardingRule,
       host: Host,
-      keys: { id: string; privateKey: string }[],
+      keys: { id: string; privateKey: string; passphrase: string }[],
       onStatusChange?: (
         status: PortForwardingRule["status"],
         error?: string,

application/state/useSettingsState.ts

@@ -27,10 +27,12 @@ import {
   STORAGE_KEY_SESSION_LOGS_FORMAT,
   STORAGE_KEY_TOGGLE_WINDOW_HOTKEY,
   STORAGE_KEY_CLOSE_TO_TRAY,
+  STORAGE_KEY_GLOBAL_HOTKEY_ENABLED,
+  STORAGE_KEY_AUTO_UPDATE_ENABLED,
 } from '../../infrastructure/config/storageKeys';
 import { DEFAULT_UI_LOCALE, resolveSupportedLocale } from '../../infrastructure/config/i18n';
 import { TERMINAL_THEMES } from '../../infrastructure/config/terminalThemes';
-import { useCustomThemes } from '../state/customThemeStore';
+import { customThemeStore, useCustomThemes } from '../state/customThemeStore';
 import { DEFAULT_FONT_SIZE } from '../../infrastructure/config/fonts';
 import { DARK_UI_THEMES, LIGHT_UI_THEMES, UiThemeTokens, getUiThemeById } from '../../infrastructure/config/uiThemes';
 import { UI_FONTS, DEFAULT_UI_FONT_ID } from '../../infrastructure/config/uiFonts';
@@ -39,7 +41,7 @@ import { useAvailableFonts } from './fontStore';
 import { localStorageAdapter } from '../../infrastructure/persistence/localStorageAdapter';
 import { netcattyBridge } from '../../infrastructure/services/netcattyBridge';
 
-const DEFAULT_THEME: 'light' | 'dark' | 'system' = 'system';
+const DEFAULT_THEME: 'light' | 'dark' | 'system' = 'dark';
 
 /** Resolve the current OS color scheme preference. */
 const getSystemPreference = (): 'light' | 'dark' =>
@@ -264,7 +266,17 @@ export const useSettingsState = () => {
     if (stored === null) return true;
     return stored === 'true';
   });
+  const [autoUpdateEnabled, setAutoUpdateEnabled] = useState<boolean>(() => {
+    const stored = readStoredString(STORAGE_KEY_AUTO_UPDATE_ENABLED);
+    if (stored === null) return true; // Default to enabled
+    return stored === 'true';
+  });
   const [hotkeyRegistrationError, setHotkeyRegistrationError] = useState<string | null>(null);
+  const [globalHotkeyEnabled, setGlobalHotkeyEnabled] = useState<boolean>(() => {
+    const stored = readStoredString(STORAGE_KEY_GLOBAL_HOTKEY_ENABLED);
+    if (stored === null) return true; // Default to enabled
+    return stored === 'true';
+  });
   const incomingTerminalSettingsSignatureRef = useRef<string | null>(null);
   const localTerminalSettingsVersionRef = useRef(0);
   const broadcastedLocalTerminalSettingsVersionRef = useRef(0);
@@ -332,6 +344,60 @@ export const useSettingsState = () => {
     setCustomCSS((prev) => (prev === storedCss ? prev : storedCss));
   }, []);
 
+  const rehydrateAllFromStorage = useCallback(() => {
+    // Theme & appearance (already have helper)
+    syncAppearanceFromStorage();
+    syncCustomCssFromStorage();
+
+    // UI Font
+    const storedFont = readStoredString(STORAGE_KEY_UI_FONT_FAMILY);
+    if (storedFont) setUiFontFamilyId(storedFont);
+
+    // Language
+    const storedLang = readStoredString(STORAGE_KEY_UI_LANGUAGE);
+    if (storedLang) setUiLanguage(storedLang as UILanguage);
+
+    // Terminal
+    const storedTermTheme = readStoredString(STORAGE_KEY_TERM_THEME);
+    if (storedTermTheme) setTerminalThemeId(storedTermTheme);
+    const storedTermFont = readStoredString(STORAGE_KEY_TERM_FONT_FAMILY);
+    if (storedTermFont) setTerminalFontFamilyId(storedTermFont);
+    const storedTermSize = localStorageAdapter.readNumber(STORAGE_KEY_TERM_FONT_SIZE);
+    if (storedTermSize != null) setTerminalFontSize(storedTermSize);
+    const storedTermSettings = readStoredString(STORAGE_KEY_TERM_SETTINGS);
+    if (storedTermSettings) {
+      try {
+        const parsed = JSON.parse(storedTermSettings);
+        setTerminalSettings(parsed);
+      } catch { /* ignore */ }
+    }
+
+    // Keyboard
+    const storedKb = readStoredString(STORAGE_KEY_CUSTOM_KEY_BINDINGS);
+    if (storedKb) {
+      try {
+        setCustomKeyBindings(JSON.parse(storedKb));
+      } catch { /* ignore */ }
+    }
+
+    // Editor
+    const storedWrap = readStoredString(STORAGE_KEY_EDITOR_WORD_WRAP);
+    if (storedWrap === 'true' || storedWrap === 'false') setEditorWordWrapState(storedWrap === 'true');
+
+    // SFTP
+    const storedDblClick = readStoredString(STORAGE_KEY_SFTP_DOUBLE_CLICK_BEHAVIOR);
+    if (storedDblClick === 'open' || storedDblClick === 'transfer') setSftpDoubleClickBehavior(storedDblClick);
+    const storedAutoSync = readStoredString(STORAGE_KEY_SFTP_AUTO_SYNC);
+    if (storedAutoSync === 'true' || storedAutoSync === 'false') setSftpAutoSync(storedAutoSync === 'true');
+    const storedHidden = readStoredString(STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES);
+    if (storedHidden === 'true' || storedHidden === 'false') setSftpShowHiddenFiles(storedHidden === 'true');
+    const storedCompress = readStoredString(STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD);
+    if (storedCompress === 'true' || storedCompress === 'false') setSftpUseCompressedUpload(storedCompress === 'true');
+
+    // Custom terminal themes
+    customThemeStore.loadFromStorage();
+  }, [syncAppearanceFromStorage, syncCustomCssFromStorage, setTerminalSettings]);
+
   useLayoutEffect(() => {
     const tokens = getUiThemeById(resolvedTheme, resolvedTheme === 'dark' ? darkUiThemeId : lightUiThemeId).tokens;
     applyThemeTokens(theme, resolvedTheme, tokens, accentMode, customAccent);
@@ -457,6 +523,12 @@ export const useSettingsState = () => {
       if (key === STORAGE_KEY_HOTKEY_RECORDING && typeof value === 'boolean') {
         setIsHotkeyRecordingState(value);
       }
+      if (key === STORAGE_KEY_GLOBAL_HOTKEY_ENABLED && typeof value === 'boolean') {
+        setGlobalHotkeyEnabled((prev) => (prev === value ? prev : value));
+      }
+      if (key === STORAGE_KEY_AUTO_UPDATE_ENABLED && typeof value === 'boolean') {
+        setAutoUpdateEnabled((prev) => (prev === value ? prev : value));
+      }
     });
     return () => {
       try {
@@ -622,11 +694,25 @@ export const useSettingsState = () => {
           setSftpUseCompressedUpload(newValue);
         }
       }
+      // Sync global hotkey enabled setting from other windows
+      if (e.key === STORAGE_KEY_GLOBAL_HOTKEY_ENABLED && e.newValue !== null) {
+        const newValue = e.newValue === 'true';
+        if (newValue !== globalHotkeyEnabled) {
+          setGlobalHotkeyEnabled(newValue);
+        }
+      }
+      // Sync auto-update enabled setting from other windows
+      if (e.key === STORAGE_KEY_AUTO_UPDATE_ENABLED && e.newValue !== null) {
+        const newValue = e.newValue === 'true';
+        if (newValue !== autoUpdateEnabled) {
+          setAutoUpdateEnabled(newValue);
+        }
+      }
     };
 
     window.addEventListener('storage', handleStorageChange);
     return () => window.removeEventListener('storage', handleStorageChange);
-  }, [theme, lightUiThemeId, darkUiThemeId, accentMode, customAccent, customCSS, uiFontFamilyId, hotkeyScheme, uiLanguage, terminalThemeId, terminalFontFamilyId, terminalFontSize, sftpDoubleClickBehavior, sftpAutoSync, sftpShowHiddenFiles, sftpUseCompressedUpload, editorWordWrap, sessionLogsEnabled, sessionLogsDir, sessionLogsFormat, mergeIncomingTerminalSettings]);
+  }, [theme, lightUiThemeId, darkUiThemeId, accentMode, customAccent, customCSS, uiFontFamilyId, hotkeyScheme, uiLanguage, terminalThemeId, terminalFontFamilyId, terminalFontSize, sftpDoubleClickBehavior, sftpAutoSync, sftpShowHiddenFiles, sftpUseCompressedUpload, editorWordWrap, sessionLogsEnabled, sessionLogsDir, sessionLogsFormat, globalHotkeyEnabled, autoUpdateEnabled, mergeIncomingTerminalSettings]);
 
   useEffect(() => {
     localStorageAdapter.writeString(STORAGE_KEY_TERM_THEME, terminalThemeId);
@@ -734,7 +820,7 @@ export const useSettingsState = () => {
     // Register/unregister the global hotkey in main process
     const bridge = netcattyBridge.get();
     if (bridge?.registerGlobalHotkey) {
-      if (toggleWindowHotkey) {
+      if (toggleWindowHotkey && globalHotkeyEnabled) {
         setHotkeyRegistrationError(null);
         bridge
           .registerGlobalHotkey(toggleWindowHotkey)
@@ -755,7 +841,13 @@ export const useSettingsState = () => {
         });
       }
     }
-  }, [toggleWindowHotkey, notifySettingsChanged]);
+  }, [toggleWindowHotkey, globalHotkeyEnabled, notifySettingsChanged]);
+
+  // Persist global hotkey enabled setting
+  useEffect(() => {
+    localStorageAdapter.writeString(STORAGE_KEY_GLOBAL_HOTKEY_ENABLED, globalHotkeyEnabled ? 'true' : 'false');
+    notifySettingsChanged(STORAGE_KEY_GLOBAL_HOTKEY_ENABLED, globalHotkeyEnabled);
+  }, [globalHotkeyEnabled, notifySettingsChanged]);
 
   // Persist and sync close to tray setting
   useEffect(() => {
@@ -770,6 +862,41 @@ export const useSettingsState = () => {
     }
   }, [closeToTray, notifySettingsChanged]);
 
+  // Hydrate auto-update state from the main-process preference file on mount.
+  // This reconciles localStorage (renderer) with auto-update-pref.json (main)
+  // in case localStorage was cleared or is stale.
+  useEffect(() => {
+    const bridge = netcattyBridge.get();
+    void bridge?.getAutoUpdate?.().then((result) => {
+      if (result && typeof result.enabled === 'boolean') {
+        setAutoUpdateEnabled((prev) => {
+          if (prev === result.enabled) return prev;
+          // Sync localStorage with the main-process truth
+          localStorageAdapter.writeString(STORAGE_KEY_AUTO_UPDATE_ENABLED, result.enabled ? 'true' : 'false');
+          return result.enabled;
+        });
+      }
+    }).catch(() => { /* bridge unavailable */ });
+  }, []);
+
+  // Persist auto-update enabled setting.
+  // Skip IPC on initial mount to avoid overwriting the main-process preference
+  // file when localStorage has been cleared (where the default is true).
+  const autoUpdateMountedRef = useRef(false);
+  useEffect(() => {
+    localStorageAdapter.writeString(STORAGE_KEY_AUTO_UPDATE_ENABLED, autoUpdateEnabled ? 'true' : 'false');
+    notifySettingsChanged(STORAGE_KEY_AUTO_UPDATE_ENABLED, autoUpdateEnabled);
+    if (!autoUpdateMountedRef.current) {
+      autoUpdateMountedRef.current = true;
+      return; // Skip IPC on initial mount
+    }
+    // Notify main process on user-initiated changes
+    const bridge = netcattyBridge.get();
+    bridge?.setAutoUpdate?.(autoUpdateEnabled).catch((err: unknown) => {
+      console.warn('[AutoUpdate] Failed to set auto-update:', err);
+    });
+  }, [autoUpdateEnabled, notifySettingsChanged]);
+
   // Get merged key bindings (defaults + custom overrides)
   const keyBindings = useMemo((): KeyBinding[] => {
     return DEFAULT_KEY_BINDINGS.map(binding => {
@@ -912,6 +1039,21 @@ export const useSettingsState = () => {
     setToggleWindowHotkey,
     closeToTray,
     setCloseToTray,
+    autoUpdateEnabled,
+    setAutoUpdateEnabled,
     hotkeyRegistrationError,
+    globalHotkeyEnabled,
+    setGlobalHotkeyEnabled,
+    rehydrateAllFromStorage,
+    // Opaque version that changes when any synced setting changes, used by useAutoSync.
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+    settingsVersion: useMemo(() => Math.random(), [
+      theme, lightUiThemeId, darkUiThemeId, accentMode, customAccent,
+      uiFontFamilyId, uiLanguage, customCSS,
+      terminalThemeId, terminalFontFamilyId, terminalFontSize, terminalSettings,
+      customKeyBindings, editorWordWrap,
+      sftpDoubleClickBehavior, sftpAutoSync, sftpShowHiddenFiles, sftpUseCompressedUpload,
+      customThemes,
+    ]),
   };
 };

application/state/useSftpState.ts

@@ -101,12 +101,26 @@ export const useSftpState = (
     }
   }, []);
 
+  const clearDirCacheEntry = useCallback((connectionId: string, path: string) => {
+    // Remove all encoding variants of this path from the cache
+    for (const key of dirCacheRef.current.keys()) {
+      if (key.startsWith(`${connectionId}::`) && key.endsWith(`::${path}`)) {
+        dirCacheRef.current.delete(key);
+      }
+    }
+  }, []);
+
   // Ref to track pending reconnections to avoid multiple reconnect attempts
   const reconnectingRef = useRef<{ left: boolean; right: boolean }>({
     left: false,
     right: false,
   });
 
+  // Map connectionId → cache key, set at connect time so each tab's
+  // navigateTo can use the correct cache key even when multiple tabs
+  // share the same hostId with different session-time overrides.
+  const connectionCacheKeyMapRef = useRef<Map<string, string>>(new Map());
+
   // Store last connected host info for reconnection
   const lastConnectedHostRef = useRef<{
     left: Host | "local" | null;
@@ -149,10 +163,12 @@ export const useSftpState = (
     dirCacheRef,
     sftpSessionsRef,
     lastConnectedHostRef,
+    connectionCacheKeyMapRef,
     reconnectingRef,
     makeCacheKey,
     clearCacheForConnection,
     createEmptyPane: createPane,
+    autoConnectLocalOnMount: options?.autoConnectLocalOnMount,
   });
 
   const {
@@ -173,6 +189,7 @@ export const useSftpState = (
     renameFile,
     changePermissions,
   } = useSftpPaneActions({
+    hosts,
     getActivePane,
     updateTab,
     updateActiveTab,
@@ -182,6 +199,7 @@ export const useSftpState = (
     dirCacheRef,
     sftpSessionsRef,
     lastConnectedHostRef,
+    connectionCacheKeyMapRef,
     reconnectingRef,
     makeCacheKey,
     clearCacheForConnection,
@@ -249,12 +267,16 @@ export const useSftpState = (
     writeTextFile,
     downloadToTempAndOpen,
     uploadExternalFiles,
+    uploadExternalEntries,
     cancelExternalUpload,
     selectApplication,
+    activeFileWatchCountRef,
   } = useSftpExternalOperations({
     getActivePane,
     refresh,
     sftpSessionsRef,
+    connectionCacheKeyMapRef,
+    clearDirCacheEntry,
     useCompressedUpload: options?.useCompressedUpload,
     addExternalUpload,
     updateExternalUpload,
@@ -298,6 +320,7 @@ export const useSftpState = (
     writeTextFile,
     downloadToTempAndOpen,
     uploadExternalFiles,
+    uploadExternalEntries,
     cancelExternalUpload,
     selectApplication,
     startTransfer,
@@ -344,6 +367,7 @@ export const useSftpState = (
     writeTextFile,
     downloadToTempAndOpen,
     uploadExternalFiles,
+    uploadExternalEntries,
     cancelExternalUpload,
     selectApplication,
     startTransfer,
@@ -396,6 +420,8 @@ export const useSftpState = (
     writeTextFile: (...args: Parameters<typeof writeTextFile>) => methodsRef.current.writeTextFile(...args),
     downloadToTempAndOpen: (...args: Parameters<typeof downloadToTempAndOpen>) => methodsRef.current.downloadToTempAndOpen(...args),
     uploadExternalFiles: (...args: Parameters<typeof uploadExternalFiles>) => methodsRef.current.uploadExternalFiles(...args),
+    uploadExternalEntries: (...args: Parameters<typeof uploadExternalEntries>) =>
+      methodsRef.current.uploadExternalEntries(...args),
     cancelExternalUpload: () => methodsRef.current.cancelExternalUpload(),
     selectApplication: () => methodsRef.current.selectApplication(),
     startTransfer: (...args: Parameters<typeof startTransfer>) => methodsRef.current.startTransfer(...args),
@@ -407,7 +433,8 @@ export const useSftpState = (
     dismissTransfer: (...args: Parameters<typeof dismissTransfer>) => methodsRef.current.dismissTransfer(...args),
     resolveConflict: (...args: Parameters<typeof resolveConflict>) => methodsRef.current.resolveConflict(...args),
     getSftpIdForConnection: (...args: Parameters<typeof getSftpIdForConnection>) => methodsRef.current.getSftpIdForConnection(...args),
-  }), []); // Empty deps - these wrappers never change
+    activeFileWatchCountRef,
+  }), [activeFileWatchCountRef]); // activeFileWatchCountRef is a stable ref
 
   // Return object with stable method references but reactive state
   // State changes will cause re-renders, but method references stay stable

application/state/useStoredString.ts

@@ -0,0 +1,28 @@
+import { useEffect, useState } from "react";
+import { localStorageAdapter } from "../../infrastructure/persistence/localStorageAdapter";
+
+/**
+ * Hook for persisting a string value to localStorage.
+ * @param storageKey - The key to use for localStorage
+ * @param fallback - The default value if no stored value exists
+ * @param validate - Optional function to validate stored value; returns fallback if invalid
+ * @returns A tuple of [value, setValue] similar to useState
+ */
+export const useStoredString = <T extends string = string>(
+    storageKey: string,
+    fallback: T,
+    validate?: (value: string) => value is T,
+) => {
+    const [value, setValue] = useState<T>(() => {
+        const stored = localStorageAdapter.readString(storageKey);
+        if (stored === null) return fallback;
+        if (validate) return validate(stored) ? stored : fallback;
+        return stored as T;
+    });
+
+    useEffect(() => {
+        localStorageAdapter.writeString(storageKey, value);
+    }, [storageKey, value]);
+
+    return [value, setValue] as const;
+};

application/state/useUpdateCheck.ts

@@ -1,7 +1,7 @@
 import { useCallback, useEffect, useRef, useState } from 'react';
 import { checkForUpdates, getReleaseUrl, type ReleaseInfo, type UpdateCheckResult } from '../../infrastructure/services/updateService';
 import { localStorageAdapter } from '../../infrastructure/persistence/localStorageAdapter';
-import { STORAGE_KEY_UPDATE_DISMISSED_VERSION, STORAGE_KEY_UPDATE_LAST_CHECK, STORAGE_KEY_UPDATE_LATEST_RELEASE } from '../../infrastructure/config/storageKeys';
+import { STORAGE_KEY_UPDATE_DISMISSED_VERSION, STORAGE_KEY_UPDATE_LAST_CHECK, STORAGE_KEY_UPDATE_LATEST_RELEASE, STORAGE_KEY_AUTO_UPDATE_ENABLED } from '../../infrastructure/config/storageKeys';
 import { netcattyBridge } from '../../infrastructure/services/netcattyBridge';
 
 // Check for updates at most once per hour
@@ -56,7 +56,13 @@ export interface UseUpdateCheckResult {
  * - Respects dismissed version to avoid nagging
  * - Provides manual check capability
  */
-export function useUpdateCheck(): UseUpdateCheckResult {
+export function useUpdateCheck(options?: { autoUpdateEnabled?: boolean }): UseUpdateCheckResult {
+  // Accept auto-update toggle from the caller (e.g. useSettingsState) so it
+  // reacts immediately in the same window. Falls back to reading localStorage
+  // when no caller provides the value (e.g. in non-settings contexts).
+  const autoUpdateEnabled = options?.autoUpdateEnabled ??
+    (localStorageAdapter.readString(STORAGE_KEY_AUTO_UPDATE_ENABLED) !== 'false');
+
   const [updateState, setUpdateState] = useState<UpdateState>({
     isChecking: false,
     hasUpdate: false,
@@ -136,14 +142,20 @@ export function useUpdateCheck(): UseUpdateCheckResult {
         return;
       }
 
+      // 'available' means an update was found but auto-download is disabled.
+      // Surface the version info (hasUpdate + latestRelease) but keep
+      // autoDownloadStatus at 'idle' so the manual download path shows.
+      const isAvailableOnly = snapshot.status === 'available';
+
       setUpdateState((prev) => {
         // Don't overwrite if the renderer already has a newer state
         if (prev.autoDownloadStatus !== 'idle') return prev;
         return {
           ...prev,
-          autoDownloadStatus: snapshot.status,
-          downloadPercent: snapshot.percent,
-          downloadError: snapshot.error,
+          hasUpdate: isAvailableOnly ? true : prev.hasUpdate,
+          autoDownloadStatus: isAvailableOnly ? 'idle' : snapshot.status,
+          downloadPercent: isAvailableOnly ? 0 : snapshot.percent,
+          downloadError: isAvailableOnly ? null : snapshot.error,
           // Use snapshot version if no release data or if versions differ
           latestRelease: (!prev.latestRelease || (snapshot.version && prev.latestRelease.version !== snapshot.version)) ? (snapshot.version ? {
             version: snapshot.version,
@@ -186,15 +198,18 @@ export function useUpdateCheck(): UseUpdateCheckResult {
       if (isDismissed) {
         dismissedAutoDownloadRef.current = true;
       }
+      // When auto-update is disabled, autoDownload=false in the main process
+      // so no download will start. Don't transition to 'downloading' or the
+      // UI will be stuck at 0%. Keep status idle and let the manual download
+      // link surface instead.
+      const isAutoUpdateOff = localStorageAdapter.readString(STORAGE_KEY_AUTO_UPDATE_ENABLED) === 'false';
+      const shouldTrackDownload = !isDismissed && !isAutoUpdateOff;
       setUpdateState((prev) => ({
         ...prev,
         hasUpdate: !isDismissed,
-        // Only transition to 'downloading' if the user hasn't dismissed this
-        // version — otherwise leave the status at 'idle' so no download
-        // progress/ready toast appears for a release they don't want.
-        autoDownloadStatus: isDismissed ? prev.autoDownloadStatus : 'downloading',
-        downloadPercent: isDismissed ? prev.downloadPercent : 0,
-        downloadError: isDismissed ? prev.downloadError : null,
+        autoDownloadStatus: shouldTrackDownload ? 'downloading' : prev.autoDownloadStatus,
+        downloadPercent: shouldTrackDownload ? 0 : prev.downloadPercent,
+        downloadError: shouldTrackDownload ? null : prev.downloadError,
         // Use electron-updater's version if GitHub API hasn't resolved yet or
         // if the updater reports a different version than the cached release.
         latestRelease: (!prev.latestRelease || prev.latestRelease.version !== info.version) ? {
@@ -439,6 +454,20 @@ export function useUpdateCheck(): UseUpdateCheckResult {
         } else if (res?.checking) {
           // Another check is already in flight — don't change status; the
           // in-flight check will resolve via IPC events.
+        } else if (nextStatus === 'error' && res?.available) {
+          // GitHub API failed but electron-updater found an update.
+          // Respect dismissed versions before surfacing.
+          const dismissed = localStorageAdapter.readString(STORAGE_KEY_UPDATE_DISMISSED_VERSION);
+          if (res.version && res.version === dismissed) {
+            // User dismissed this version — don't re-surface
+          } else {
+            setUpdateState((prev) => ({
+              ...prev,
+              manualCheckStatus: 'available',
+              hasUpdate: true,
+              error: null,
+            }));
+          }
         } else if (nextStatus === 'error' && !res?.error && !res?.available) {
           // GitHub API failed but electron-updater says no update available.
           // Clear the error status so Settings doesn't stay stuck in error state.
@@ -519,12 +548,12 @@ export function useUpdateCheck(): UseUpdateCheckResult {
     if (IS_UPDATE_DEMO_MODE) {
       return;
     }
-    
-    debugLog('Version check effect', { 
-      hasChecked: hasCheckedOnStartupRef.current, 
+
+    debugLog('Version check effect', {
+      hasChecked: hasCheckedOnStartupRef.current,
       currentVersion: updateState.currentVersion
     });
-    
+
     if (hasCheckedOnStartupRef.current) {
       return;
     }
@@ -533,12 +562,11 @@ export function useUpdateCheck(): UseUpdateCheckResult {
       return;
     }
 
-    // Check if we've checked recently
+    // Hydrate cached release info so update status is visible across windows.
+    // When auto-update is disabled, hydrate release data (for the Settings UI)
+    // but don't set hasUpdate (which would trigger the toast in App.tsx).
     const lastCheck = localStorageAdapter.readNumber(STORAGE_KEY_UPDATE_LAST_CHECK);
-    const now = Date.now();
-    if (lastCheck && now - lastCheck < UPDATE_CHECK_INTERVAL_MS) {
-      hasCheckedOnStartupRef.current = true;
-      // Hydrate cached release info so late-opening windows show the result
+    if (lastCheck) {
       const cachedRelease = localStorageAdapter.readString(STORAGE_KEY_UPDATE_LATEST_RELEASE);
       if (cachedRelease) {
         try {
@@ -556,6 +584,19 @@ export function useUpdateCheck(): UseUpdateCheckResult {
           // Ignore corrupted cache
         }
       }
+    }
+
+    // Respect auto-update toggle — skip automatic check when disabled.
+    // Don't set hasCheckedOnStartupRef so re-enabling (which changes the
+    // autoUpdateEnabled dependency) can re-trigger this effect.
+    if (!autoUpdateEnabled) {
+      return;
+    }
+
+    // Check if we've checked recently
+    const now = Date.now();
+    if (lastCheck && now - lastCheck < UPDATE_CHECK_INTERVAL_MS) {
+      hasCheckedOnStartupRef.current = true;
       return;
     }
 
@@ -563,6 +604,13 @@ export function useUpdateCheck(): UseUpdateCheckResult {
     debugLog('Starting delayed update check for version:', updateState.currentVersion);
 
     startupCheckTimeoutRef.current = setTimeout(async () => {
+      // Re-check the toggle at fire time — the user may have toggled it
+      // after the timer was scheduled.
+      const stillEnabled = localStorageAdapter.readString(STORAGE_KEY_AUTO_UPDATE_ENABLED);
+      if (stillEnabled === 'false') {
+        debugLog('Skipping startup check — auto-update disabled after timer was scheduled');
+        return;
+      }
       // If electron-updater's auto-check already started a download, skip the
       // redundant GitHub API check to avoid duplicate toast notifications.
       if (autoDownloadStatusRef.current !== 'idle') {
@@ -601,7 +649,7 @@ export function useUpdateCheck(): UseUpdateCheckResult {
         clearTimeout(startupCheckTimeoutRef.current);
       }
     };
-  }, [updateState.currentVersion, performCheck]);
+  }, [updateState.currentVersion, autoUpdateEnabled, performCheck]);
 
   return {
     updateState,

components/AIChatSidePanel.tsx

@@ -0,0 +1,760 @@
+/**
+ * AIChatSidePanel - Main AI chat interface side panel
+ *
+ * Zed-style agent panel with agent selector, scoped chat sessions,
+ * message list, input area, and session history drawer.
+ *
+ * Core logic is decomposed into focused hooks:
+ * - useAIChatStreaming: stream processing, abort management, agent sub-flows
+ * - useToolApproval: tool approval workflow, timeouts, resume logic
+ * - useConversationExport: export formats & object URL lifecycle
+ */
+
+import {
+  History,
+  Plus,
+  Trash2,
+  X,
+} from 'lucide-react';
+import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import { cn } from '../lib/utils';
+import { useI18n } from '../application/i18n/I18nProvider';
+import { useWindowControls } from '../application/state/useWindowControls';
+import { useImageUpload } from '../application/state/useImageUpload';
+import type {
+  AIPermissionMode,
+  AISession,
+  AISessionScope,
+  ChatMessage,
+  DiscoveredAgent,
+  ExternalAgentConfig,
+  ProviderConfig,
+} from '../infrastructure/ai/types';
+import { getAgentModelPresets } from '../infrastructure/ai/types';
+import { useAgentDiscovery } from '../application/state/useAgentDiscovery';
+import { Button } from './ui/button';
+import { ScrollArea } from './ui/scroll-area';
+import AgentSelector from './ai/AgentSelector';
+import ChatInput from './ai/ChatInput';
+import ChatMessageList from './ai/ChatMessageList';
+import ConversationExport from './ai/ConversationExport';
+import { useAIChatStreaming, getNetcattyBridge } from './ai/hooks/useAIChatStreaming';
+import { useToolApproval } from './ai/hooks/useToolApproval';
+import { useConversationExport } from './ai/hooks/useConversationExport';
+
+// -------------------------------------------------------------------
+// Props
+// -------------------------------------------------------------------
+
+interface AIChatSidePanelProps {
+  // Session state (per-scope)
+  sessions: AISession[];
+  activeSessionIdMap: Record<string, string | null>;
+  setActiveSessionId: (scopeKey: string, id: string | null) => void;
+  createSession: (scope: AISessionScope, agentId?: string) => AISession;
+  deleteSession: (sessionId: string, scopeKey?: string) => void;
+  updateSessionTitle: (sessionId: string, title: string) => void;
+  addMessageToSession: (sessionId: string, message: ChatMessage) => void;
+  updateLastMessage: (
+    sessionId: string,
+    updater: (msg: ChatMessage) => ChatMessage,
+  ) => void;
+  updateMessageById: (
+    sessionId: string,
+    messageId: string,
+    updater: (msg: ChatMessage) => ChatMessage,
+  ) => void;
+  // Provider config
+  providers: ProviderConfig[];
+  activeProviderId: string;
+  activeModelId: string;
+
+  // Agent info
+  defaultAgentId: string;
+  externalAgents: ExternalAgentConfig[];
+  setExternalAgents?: (value: ExternalAgentConfig[] | ((prev: ExternalAgentConfig[]) => ExternalAgentConfig[])) => void;
+  agentModelMap: Record<string, string>;
+  setAgentModel: (agentId: string, modelId: string) => void;
+
+  // Safety
+  globalPermissionMode: AIPermissionMode;
+  setGlobalPermissionMode?: (mode: AIPermissionMode) => void;
+  commandBlocklist?: string[];
+  maxIterations?: number;
+
+  // Context
+  scopeType: 'terminal' | 'workspace';
+  scopeTargetId?: string;
+  scopeHostIds?: string[];
+  scopeLabel?: string;
+
+  // Terminal session context (from parent)
+  terminalSessions?: Array<{
+    sessionId: string;
+    hostId: string;
+    hostname: string;
+    label: string;
+    os?: string;
+    username?: string;
+    connected: boolean;
+  }>;
+
+  // Visibility
+  isVisible?: boolean;
+}
+
+// -------------------------------------------------------------------
+// Helpers
+// -------------------------------------------------------------------
+
+function generateId(): string {
+  return `msg-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`;
+}
+
+// -------------------------------------------------------------------
+// Component
+// -------------------------------------------------------------------
+
+const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
+  sessions,
+  activeSessionIdMap,
+  setActiveSessionId: setActiveSessionIdForScope,
+  createSession,
+  deleteSession,
+  updateSessionTitle,
+  addMessageToSession,
+  updateLastMessage,
+  updateMessageById,
+  providers,
+  activeProviderId,
+  activeModelId,
+  defaultAgentId,
+  externalAgents,
+  setExternalAgents,
+  agentModelMap,
+  setAgentModel,
+  globalPermissionMode,
+  setGlobalPermissionMode,
+  commandBlocklist,
+  maxIterations = 20,
+  scopeType,
+  scopeTargetId,
+  scopeHostIds,
+  scopeLabel,
+  terminalSessions = [],
+  isVisible = true,
+}) => {
+  const { t } = useI18n();
+  // ── Per-scope state ──
+  // Derive scope key for per-scope isolation
+  const scopeKey = `${scopeType}:${scopeTargetId ?? ''}`;
+
+  // Per-scope input values
+  const [inputValueMap, setInputValueMap] = useState<Record<string, string>>({});
+  const inputValue = inputValueMap[scopeKey] ?? '';
+  const setInputValue = useCallback((val: string) => {
+    setInputValueMap(prev => ({ ...prev, [scopeKey]: val }));
+  }, [scopeKey]);
+
+  const [showHistory, setShowHistory] = useState(false);
+  const [currentAgentId, setCurrentAgentId] = useState(defaultAgentId);
+
+  const { images, addImages, removeImage, clearImages } = useImageUpload();
+  const { openSettingsWindow } = useWindowControls();
+
+  // ── Streaming hook ──
+  const {
+    streamingSessionIds,
+    setStreamingForScope,
+    abortControllersRef,
+    processCattyStream,
+    sendToCattyAgent,
+    sendToExternalAgent,
+    reportStreamError,
+  } = useAIChatStreaming({
+    maxIterations,
+    addMessageToSession,
+    updateLastMessage,
+    updateMessageById,
+  });
+
+  // ── Tool approval hook ──
+  const {
+    pendingApprovalContextRef,
+    setPendingApproval,
+    handleApprovalResponse,
+  } = useToolApproval({
+    addMessageToSession,
+    updateLastMessage,
+    updateMessageById,
+    setStreamingForScope,
+    abortControllersRef,
+    processCattyStream,
+    t,
+  });
+
+  // Per-scope active session ID
+  const activeSessionId = activeSessionIdMap[scopeKey] ?? null;
+  const isStreaming = activeSessionId ? streamingSessionIds.has(activeSessionId) : false;
+  const setActiveSessionId = useCallback((id: string | null) => {
+    setActiveSessionIdForScope(scopeKey, id);
+  }, [scopeKey, setActiveSessionIdForScope]);
+
+  // Restore agent selector from active session when scope changes
+  useEffect(() => {
+    if (activeSessionId) {
+      const session = sessions.find((s) => s.id === activeSessionId);
+      if (session) {
+        setCurrentAgentId(session.agentId);
+      }
+    }
+  }, [scopeKey, activeSessionId, sessions]);
+
+  // Proactively sync terminal session metadata to main process whenever scope or sessions change
+  useEffect(() => {
+    const bridge = getNetcattyBridge();
+    if (bridge?.aiMcpUpdateSessions && terminalSessions.length > 0) {
+      void bridge.aiMcpUpdateSessions(terminalSessions, activeSessionId ?? undefined);
+    }
+  }, [terminalSessions, scopeKey, activeSessionId]);
+
+  // Sync provider configs to main process so it can decrypt API keys server-side.
+  // Keys stay encrypted in transit; main process decrypts only when making HTTP requests.
+  useEffect(() => {
+    const bridge = getNetcattyBridge();
+    if (bridge?.aiSyncProviders && providers.length > 0) {
+      void bridge.aiSyncProviders(providers);
+    }
+  }, [providers]);
+
+  // Abort all active streams and clean up on unmount
+  useEffect(() => {
+    const controllers = abortControllersRef.current;
+    return () => {
+      controllers.forEach(c => c.abort());
+      controllers.clear();
+      // Clear pending approval (clears timeout too via setPendingApproval)
+      setPendingApproval(null);
+    };
+  }, [abortControllersRef, setPendingApproval]);
+
+  // Agent discovery
+  const {
+    discoveredAgents,
+    isDiscovering,
+    rediscover,
+    enableAgent,
+  } = useAgentDiscovery(externalAgents, setExternalAgents);
+
+  const handleEnableDiscoveredAgent = useCallback(
+    (agent: DiscoveredAgent) => {
+      const config = enableAgent(agent);
+      setExternalAgents?.((prev) => [...prev, config]);
+    },
+    [enableAgent, setExternalAgents],
+  );
+
+  // Active session (scoped)
+  const activeSession = useMemo(
+    () => sessions.find((s) => s.id === activeSessionId) ?? null,
+    [sessions, activeSessionId],
+  );
+
+  const messages = activeSession?.messages ?? [];
+
+  // ── Export hook ──
+  const { handleExport } = useConversationExport(activeSession);
+
+  // Active provider info
+  const activeProvider = useMemo(
+    () => providers.find((p) => p.id === activeProviderId),
+    [providers, activeProviderId],
+  );
+
+  const providerDisplayName = activeProvider?.name ?? '';
+  const modelDisplayName = activeModelId || activeProvider?.defaultModel || '';
+
+  // Agent model presets for the current external agent
+  const currentAgentConfig = useMemo(
+    () => currentAgentId !== 'catty' ? externalAgents.find(a => a.id === currentAgentId) : undefined,
+    [currentAgentId, externalAgents],
+  );
+  const agentModelPresets = useMemo(
+    () => getAgentModelPresets(currentAgentConfig?.command),
+    [currentAgentConfig?.command],
+  );
+
+  // Per-agent model: recall last selection or use first preset as default
+  const selectedAgentModel = useMemo(() => {
+    const stored = agentModelMap[currentAgentId];
+    if (stored && agentModelPresets.some(p => stored === p.id || stored.startsWith(p.id + '/'))) {
+      return stored;
+    }
+    // Default to first preset; for models with thinking levels, use the default level
+    if (agentModelPresets.length > 0) {
+      const first = agentModelPresets[0];
+      if (first.thinkingLevels?.length) {
+        return `${first.id}/${first.thinkingLevels[first.thinkingLevels.length - 1]}`;
+      }
+      return first.id;
+    }
+    return undefined;
+  }, [currentAgentId, agentModelMap, agentModelPresets]);
+
+  const handleAgentModelSelect = useCallback((modelId: string) => {
+    setAgentModel(currentAgentId, modelId);
+  }, [currentAgentId, setAgentModel]);
+
+  // Filtered sessions for history (matching current scope type)
+  const historySessions = useMemo(
+    () =>
+      sessions
+        .filter((s) => s.scope.type === scopeType && s.scope.targetId === scopeTargetId)
+        .sort((a, b) => b.updatedAt - a.updatedAt),
+    [sessions, scopeType, scopeTargetId],
+  );
+
+  // -------------------------------------------------------------------
+  // Handlers
+  // -------------------------------------------------------------------
+
+  const handleNewChat = useCallback(() => {
+    const scope: AISessionScope = {
+      type: scopeType,
+      targetId: scopeTargetId,
+      hostIds: scopeHostIds,
+    };
+    const session = createSession(scope, currentAgentId);
+    setActiveSessionId(session.id);
+    setShowHistory(false);
+    setInputValue('');
+  }, [
+    scopeType,
+    scopeTargetId,
+    scopeHostIds,
+    currentAgentId,
+    createSession,
+    setActiveSessionId,
+    setInputValue,
+  ]);
+
+  const handleOpenSettings = useCallback(() => {
+    void openSettingsWindow();
+  }, [openSettingsWindow]);
+
+  // -------------------------------------------------------------------
+  // Shared helpers for handleSend sub-flows
+  // -------------------------------------------------------------------
+
+  /** Ref to always access latest sessions (avoids stale closure in autoTitleSession). */
+  const sessionsRef = useRef(sessions);
+  sessionsRef.current = sessions;
+
+  /** Refs to avoid re-creating handleSend on every keystroke / image change. */
+  const inputValueRef = useRef(inputValue);
+  inputValueRef.current = inputValue;
+  const imagesRef = useRef(images);
+  imagesRef.current = images;
+
+  /** Auto-title a session from the first user message if untitled. */
+  const autoTitleSession = useCallback((sessionId: string, text: string) => {
+    const s = sessionsRef.current.find(x => x.id === sessionId);
+    if (s && (!s.title || s.title === 'New Chat')) {
+      updateSessionTitle(sessionId, text.length > 50 ? text.slice(0, 50) + '...' : text);
+    }
+  }, [updateSessionTitle]);
+
+  /** Ensure a session exists for the current scope and return its ID. */
+  const ensureSession = useCallback((): string => {
+    if (activeSessionId) return activeSessionId;
+    const scope: AISessionScope = { type: scopeType, targetId: scopeTargetId, hostIds: scopeHostIds };
+    const session = createSession(scope, currentAgentId);
+    setActiveSessionId(session.id);
+    return session.id;
+  }, [activeSessionId, scopeType, scopeTargetId, scopeHostIds, currentAgentId, createSession, setActiveSessionId]);
+
+  // -------------------------------------------------------------------
+  // Main send handler (thin orchestrator)
+  // -------------------------------------------------------------------
+
+  const handleSend = useCallback(async () => {
+    const trimmed = inputValueRef.current.trim();
+    const sendScopeKey = scopeKey;
+    if (!trimmed || isStreaming) return;
+
+    const isExternalAgent = currentAgentId !== 'catty';
+
+    // No provider configured for built-in agent
+    if (!isExternalAgent && !activeProvider) {
+      const errSessionId = ensureSession();
+      addMessageToSession(errSessionId, { id: generateId(), role: 'user', content: trimmed, timestamp: Date.now() });
+      addMessageToSession(errSessionId, { id: generateId(), role: 'assistant', content: t('ai.chat.noProvider'), timestamp: Date.now() });
+      setInputValue('');
+      return;
+    }
+
+    // Ensure session exists
+    const sessionId = ensureSession();
+
+    // Capture images before clearing
+    const attachedImages = imagesRef.current.map(img => ({ base64Data: img.base64Data, mediaType: img.mediaType, filename: img.filename }));
+
+    // Add user message
+    addMessageToSession(sessionId, {
+      id: generateId(), role: 'user', content: trimmed,
+      ...(attachedImages.length > 0 ? { images: attachedImages } : {}),
+      timestamp: Date.now(),
+    });
+    setInputValue('');
+    clearImages();
+    setStreamingForScope(sessionId, true);
+
+    // Create assistant message placeholder with a tracked ID
+    const agentConfig = isExternalAgent ? externalAgents.find(a => a.id === currentAgentId) : undefined;
+    const assistantMsgId = generateId();
+    addMessageToSession(sessionId, {
+      id: assistantMsgId, role: 'assistant', content: '', timestamp: Date.now(),
+      model: isExternalAgent ? (agentConfig?.name || 'external') : (activeModelId || activeProvider?.defaultModel || ''),
+      providerId: isExternalAgent ? undefined : activeProvider?.providerId,
+    });
+
+    const abortController = new AbortController();
+    abortControllersRef.current.set(sessionId, abortController);
+    const currentSession = sessionsRef.current.find(s => s.id === sessionId);
+
+    if (isExternalAgent) {
+      if (!agentConfig) {
+        updateMessageById(sessionId, assistantMsgId, msg => ({ ...msg, content: 'External agent not found. Please check settings.', executionStatus: 'failed' }));
+        setStreamingForScope(sessionId, false);
+        return;
+      }
+      try {
+        await sendToExternalAgent(sessionId, trimmed, agentConfig, abortController, attachedImages, {
+          terminalSessions,
+          providers,
+          selectedAgentModel,
+        });
+      } catch (err) {
+        reportStreamError(sessionId, abortController.signal, err);
+      }
+      // Clear any lingering statusText when the external agent stream finishes
+      updateLastMessage(sessionId, msg => msg.statusText ? { ...msg, statusText: '' } : msg);
+      setStreamingForScope(sessionId, false);
+      abortControllersRef.current.delete(sessionId);
+      autoTitleSession(sessionId, trimmed);
+    } else {
+      await sendToCattyAgent(sessionId, sendScopeKey, trimmed, abortController, currentSession ?? undefined, assistantMsgId, {
+        activeProvider,
+        activeModelId,
+        scopeType,
+        scopeTargetId,
+        scopeLabel,
+        globalPermissionMode,
+        commandBlocklist,
+        terminalSessions,
+        setPendingApproval,
+        autoTitleSession,
+      });
+    }
+  }, [
+    isStreaming, activeProvider, scopeKey, currentAgentId,
+    activeModelId, externalAgents,
+    ensureSession, addMessageToSession, updateMessageById, updateLastMessage,
+    setStreamingForScope, setInputValue, clearImages,
+    sendToExternalAgent, sendToCattyAgent, reportStreamError, autoTitleSession, t,
+    abortControllersRef, terminalSessions, providers, selectedAgentModel,
+    scopeType, scopeTargetId, scopeLabel, globalPermissionMode, commandBlocklist, setPendingApproval,
+  ]);
+
+  const handleStop = useCallback(() => {
+    if (!activeSessionId) return;
+    const controller = abortControllersRef.current.get(activeSessionId);
+    controller?.abort();
+    abortControllersRef.current.delete(activeSessionId);
+    setStreamingForScope(activeSessionId, false);
+    // Clear statusText on the last message so stale status indicators disappear
+    updateLastMessage(activeSessionId, msg => ({
+      ...msg,
+      statusText: '',
+      executionStatus: msg.executionStatus === 'running' ? 'completed' : msg.executionStatus,
+    }));
+    // Also clear any pending approval (clears timeout too via setPendingApproval)
+    if (pendingApprovalContextRef.current?.sessionId === activeSessionId) {
+      setPendingApproval(null);
+    }
+  }, [activeSessionId, setStreamingForScope, updateLastMessage, setPendingApproval, abortControllersRef, pendingApprovalContextRef]);
+
+  const handleSelectSession = useCallback(
+    (sessionId: string) => {
+      setActiveSessionId(sessionId);
+      // Restore agent selector to match the session's bound agent
+      const session = sessions.find((s) => s.id === sessionId);
+      if (session) {
+        setCurrentAgentId(session.agentId);
+      }
+      setShowHistory(false);
+    },
+    [setActiveSessionId, sessions],
+  );
+
+  const handleDeleteSession = useCallback(
+    (e: React.MouseEvent, sessionId: string) => {
+      e.stopPropagation();
+      const bridge = getNetcattyBridge();
+      void bridge?.aiAcpCleanup?.(sessionId).catch(() => {});
+      deleteSession(sessionId, scopeKey);
+      // Active session clearing is handled by deleteSession with scopeKey
+    },
+    [deleteSession, scopeKey],
+  );
+
+  const handleAgentChange = useCallback((agentId: string) => {
+    setCurrentAgentId(agentId);
+    // Preserve the current session in history and start a new one with the selected agent
+    const scope: AISessionScope = { type: scopeType, targetId: scopeTargetId, hostIds: scopeHostIds };
+    const session = createSession(scope, agentId);
+    setActiveSessionId(session.id);
+  }, [scopeType, scopeTargetId, scopeHostIds, createSession, setActiveSessionId]);
+
+  // -------------------------------------------------------------------
+  // Render
+  // -------------------------------------------------------------------
+
+  if (!isVisible) return null;
+
+  return (
+    <div className="flex flex-col h-full bg-background">
+      {/* ── Header ── */}
+      <div className="px-2.5 py-1.5 flex items-center justify-between border-b border-border/50 shrink-0">
+        <AgentSelector
+          currentAgentId={currentAgentId}
+          externalAgents={externalAgents}
+          discoveredAgents={discoveredAgents}
+          isDiscovering={isDiscovering}
+          onSelectAgent={handleAgentChange}
+          onEnableDiscoveredAgent={handleEnableDiscoveredAgent}
+          onRediscover={rediscover}
+          onManageAgents={handleOpenSettings}
+        />
+        <div className="flex items-center gap-0.5">
+          <ConversationExport
+            session={activeSession}
+            onExport={handleExport}
+          />
+          <Button
+            variant="ghost"
+            size="icon"
+            className="h-7 w-7 rounded-md text-muted-foreground/62 hover:bg-white/[0.05] hover:text-foreground"
+            onClick={() => setShowHistory(!showHistory)}
+            title="Session history"
+          >
+            <History size={14} />
+          </Button>
+          <Button
+            variant="ghost"
+            size="icon"
+            className="h-7 w-7 rounded-md text-primary/82 hover:bg-primary/[0.10] hover:text-primary"
+            onClick={handleNewChat}
+            title="New chat"
+          >
+            <Plus size={15} />
+          </Button>
+        </div>
+      </div>
+
+      {/* ── Main content ── */}
+      {showHistory ? (
+        <SessionHistoryDrawer
+          sessions={historySessions}
+          activeSessionId={activeSessionId}
+          onSelect={handleSelectSession}
+          onDelete={handleDeleteSession}
+          onClose={() => setShowHistory(false)}
+        />
+      ) : (
+        <>
+          {/* Chat messages */}
+          <ChatMessageList
+            messages={messages}
+            isStreaming={isStreaming}
+            onApprove={(messageId) => void handleApprovalResponse(messageId, true, {
+              terminalSessions,
+              scopeType,
+              scopeTargetId,
+              scopeLabel,
+              globalPermissionMode,
+              commandBlocklist,
+            })}
+            onReject={(messageId) => void handleApprovalResponse(messageId, false, {
+              terminalSessions,
+              scopeType,
+              scopeTargetId,
+              scopeLabel,
+              globalPermissionMode,
+              commandBlocklist,
+            })}
+          />
+
+          {/* Recent sessions (Zed-style, shown when no messages) */}
+          {messages.length === 0 && historySessions.length > 0 && (
+            <div className="shrink-0 px-4 pb-1">
+              <div className="flex items-baseline justify-between mb-2">
+                <span className="text-[11px] text-muted-foreground/30 tracking-wide">{t('ai.chat.recent')}</span>
+                <button
+                  onClick={() => setShowHistory(true)}
+                  className="text-[11px] text-muted-foreground/30 hover:text-muted-foreground/50 transition-colors cursor-pointer"
+                >
+                  {t('ai.chat.viewAll')}
+                </button>
+              </div>
+              {historySessions.slice(0, 3).map((session) => (
+                <button
+                  key={session.id}
+                  onClick={() => handleSelectSession(session.id)}
+                  className="w-full flex items-baseline justify-between py-1.5 text-left hover:text-foreground transition-colors cursor-pointer"
+                >
+                  <span className="text-[13px] text-foreground/60 truncate pr-4">
+                    {session.title || t('ai.chat.untitled')}
+                  </span>
+                  <span className="text-[11px] text-muted-foreground/25 shrink-0">
+                    {formatRelativeTime(new Date(session.updatedAt), t)}
+                  </span>
+                </button>
+              ))}
+            </div>
+          )}
+
+          {/* Input area */}
+          <ChatInput
+            value={inputValue}
+            onChange={setInputValue}
+            onSend={handleSend}
+            onStop={handleStop}
+            isStreaming={isStreaming}
+            providerName={providerDisplayName}
+            modelName={modelDisplayName}
+            agentName={currentAgentId === 'catty' ? 'Catty Agent' : externalAgents.find(a => a.id === currentAgentId)?.name}
+            modelPresets={agentModelPresets}
+            selectedModelId={selectedAgentModel}
+            onModelSelect={handleAgentModelSelect}
+            images={images}
+            onAddImages={addImages}
+            onRemoveImage={removeImage}
+            hosts={terminalSessions.map(s => ({ sessionId: s.sessionId, hostname: s.hostname, label: s.label, connected: s.connected }))}
+            permissionMode={globalPermissionMode}
+            onPermissionModeChange={setGlobalPermissionMode}
+          />
+        </>
+      )}
+
+    </div>
+  );
+};
+
+// -------------------------------------------------------------------
+// Session History Drawer
+// -------------------------------------------------------------------
+
+interface SessionHistoryDrawerProps {
+  sessions: AISession[];
+  activeSessionId: string | null;
+  onSelect: (sessionId: string) => void;
+  onDelete: (e: React.MouseEvent, sessionId: string) => void;
+  onClose: () => void;
+}
+
+const SessionHistoryDrawer: React.FC<SessionHistoryDrawerProps> = ({
+  sessions,
+  activeSessionId,
+  onSelect,
+  onDelete,
+  onClose,
+}) => {
+  const { t } = useI18n();
+  return (
+    <div className="flex-1 flex flex-col min-h-0">
+      <div className="px-4 py-2.5 flex items-center justify-between shrink-0 border-b border-border/30">
+        <span className="text-[13px] font-medium text-foreground/80">{t('ai.chat.allSessions')}</span>
+        <button
+          onClick={onClose}
+          className="text-[12px] text-muted-foreground/60 hover:text-muted-foreground transition-colors cursor-pointer"
+        >
+          <X size={14} />
+        </button>
+      </div>
+      <ScrollArea className="flex-1">
+        <div className="px-3">
+          {sessions.length === 0 ? (
+            <div className="py-12 text-center">
+              <p className="text-[13px] text-muted-foreground/40">
+                {t('ai.chat.noSessions')}
+              </p>
+            </div>
+          ) : (
+            sessions.map((session) => {
+              const isActive = session.id === activeSessionId;
+              const time = new Date(session.updatedAt);
+              const timeStr = formatRelativeTime(time, t);
+
+              return (
+                <button
+                  key={session.id}
+                  onClick={() => onSelect(session.id)}
+                  className={cn(
+                    'w-full flex items-center justify-between py-2.5 border-b border-border/20 text-left transition-colors cursor-pointer group',
+                    isActive ? 'text-foreground' : 'text-foreground/70 hover:text-foreground',
+                  )}
+                >
+                  <span className="text-[13px] truncate pr-3 flex-1 min-w-0">
+                    {session.title || t('ai.chat.untitled')}
+                  </span>
+                  <div className="flex items-center gap-2 shrink-0">
+                    <span className="text-[12px] text-muted-foreground/50">
+                      {timeStr}
+                    </span>
+                    <button
+                      onClick={(e) => onDelete(e, session.id)}
+                      className="opacity-0 group-hover:opacity-100 p-0.5 hover:text-destructive transition-all cursor-pointer"
+                      title="Delete"
+                    >
+                      <Trash2 size={12} />
+                    </button>
+                  </div>
+                </button>
+              );
+            })
+          )}
+        </div>
+      </ScrollArea>
+    </div>
+  );
+};
+
+// -------------------------------------------------------------------
+// Helpers
+// -------------------------------------------------------------------
+
+function formatRelativeTime(date: Date, t: (key: string) => string): string {
+  const now = Date.now();
+  const diff = now - date.getTime();
+  const minutes = Math.floor(diff / 60_000);
+  const hours = Math.floor(diff / 3_600_000);
+  const days = Math.floor(diff / 86_400_000);
+
+  if (minutes < 1) return t('ai.chat.justNow');
+  if (minutes < 60) return t('ai.chat.minutesAgo').replace('{n}', String(minutes));
+  if (hours < 24) return t('ai.chat.hoursAgo').replace('{n}', String(hours));
+  if (days < 7) return t('ai.chat.daysAgo').replace('{n}', String(days));
+  return date.toLocaleDateString(undefined, { month: 'short', day: 'numeric' });
+}
+
+// -------------------------------------------------------------------
+// Export
+// -------------------------------------------------------------------
+
+const AIChatSidePanel = React.memo(AIChatSidePanelInner);
+AIChatSidePanel.displayName = 'AIChatSidePanel';
+
+export default AIChatSidePanel;
+export { AIChatSidePanel };
+export type { AIChatSidePanelProps };

components/CloudSyncSettings.tsx

@@ -731,6 +731,7 @@ export const SyncDashboard: React.FC<SyncDashboardProps> = ({
     const [webdavPassword, setWebdavPassword] = useState('');
     const [webdavToken, setWebdavToken] = useState('');
     const [showWebdavSecret, setShowWebdavSecret] = useState(false);
+    const [webdavAllowInsecure, setWebdavAllowInsecure] = useState(false);
     const [webdavError, setWebdavError] = useState<string | null>(null);
     const [webdavErrorDetail, setWebdavErrorDetail] = useState<string | null>(null);
     const [isSavingWebdav, setIsSavingWebdav] = useState(false);
@@ -853,6 +854,7 @@ export const SyncDashboard: React.FC<SyncDashboardProps> = ({
         setWebdavUsername(config?.username || '');
         setWebdavPassword(config?.password || '');
         setWebdavToken(config?.token || '');
+        setWebdavAllowInsecure(config?.allowInsecure || false);
         setShowWebdavSecret(false);
         setWebdavError(null);
         setWebdavErrorDetail(null);
@@ -903,6 +905,7 @@ export const SyncDashboard: React.FC<SyncDashboardProps> = ({
             username: webdavAuthType === 'token' ? undefined : webdavUsername.trim(),
             password: webdavAuthType === 'token' ? undefined : webdavPassword,
             token: webdavAuthType === 'token' ? webdavToken.trim() : undefined,
+            allowInsecure: webdavAllowInsecure ? true : undefined,
         };
 
         setIsSavingWebdav(true);
@@ -1337,6 +1340,16 @@ export const SyncDashboard: React.FC<SyncDashboardProps> = ({
                             {t('cloudSync.webdav.showSecret')}
                         </label>
 
+                        <label className="flex items-center gap-2 text-sm text-muted-foreground select-none">
+                            <input
+                                type="checkbox"
+                                checked={webdavAllowInsecure}
+                                onChange={(e) => setWebdavAllowInsecure(e.target.checked)}
+                                className="accent-primary"
+                            />
+                            {t('cloudSync.webdav.allowInsecure')}
+                        </label>
+
                         {webdavError && (
                             <p className="text-sm text-red-500">{webdavError}</p>
                         )}

components/DistroAvatar.tsx

@@ -18,6 +18,10 @@ export const DISTRO_LOGOS: Record<string, string> = {
   oracle: "/distro/oracle.svg",
   kali: "/distro/kali.svg",
   almalinux: "/distro/almalinux.svg",
+  // OS-level logos (used by local terminal tab icons)
+  macos: "/distro/macos.svg",
+  windows: "/distro/windows.svg",
+  linux: "/distro/linux.svg",
 };
 
 export const DISTRO_COLORS: Record<string, string> = {
@@ -34,6 +38,10 @@ export const DISTRO_COLORS: Record<string, string> = {
   oracle: "bg-[#C74634]",
   kali: "bg-[#0F6DB3]",
   almalinux: "bg-[#173B66]",
+  // OS-level colors
+  macos: "bg-[#333333]",
+  windows: "bg-[#0078D4]",
+  linux: "bg-[#333333]",
   default: "bg-slate-600",
 };
 

components/HostDetailsPanel.tsx

@@ -27,6 +27,7 @@ import {
 import React, { useEffect, useMemo, useState, useCallback } from "react";
 import { useI18n } from "../application/i18n/I18nProvider";
 import { useApplicationBackend } from "../application/state/useApplicationBackend";
+import { useSettingsState } from "../application/state/useSettingsState";
 import { customThemeStore } from "../application/state/customThemeStore";
 import { MIN_FONT_SIZE, MAX_FONT_SIZE } from "../infrastructure/config/fonts";
 import { cn } from "../lib/utils";
@@ -99,6 +100,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
 }) => {
   const { t } = useI18n();
   const { checkSshAgent } = useApplicationBackend();
+  const { terminalThemeId, terminalFontSize } = useSettingsState();
   const [form, setForm] = useState<Host>(
     () =>
       initialData ||
@@ -113,7 +115,8 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         os: "linux",
         authMethod: "password",
         charset: "UTF-8",
-        theme: "Flexoki Dark",
+        theme: terminalThemeId,
+        fontSize: terminalFontSize,
         createdAt: Date.now(),
         group: defaultGroup || undefined, // Pre-fill with current navigation group
       } as Host),

components/PortForwardingNew.tsx

@@ -130,7 +130,7 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
         const result = await startTunnel(
           rule,
           _host,
-          keys.map((k) => ({ id: k.id, privateKey: k.privateKey })),
+          keys.map((k) => ({ id: k.id, privateKey: k.privateKey, passphrase: k.passphrase })),
           (status, error) => {
             // Show toast on error (only once)
             if (status === "error" && error && !errorShown) {

components/SFTPModal.tsx

@@ -24,7 +24,6 @@ import { useSftpModalFileActions } from "./sftp-modal/hooks/useSftpModalFileActi
 import { useSftpModalKeyboardShortcuts } from "./sftp-modal/hooks/useSftpModalKeyboardShortcuts";
 import { joinPath, isRootPath, getParentPath } from "./sftp-modal/pathUtils";
 import { toast } from "./ui/toast";
-import { Dialog, DialogContent } from "./ui/dialog";
 
 interface SFTPModalProps {
   host: Host;
@@ -649,10 +648,13 @@ const SFTPModal: React.FC<SFTPModalProps> = ({
     }
   };
 
+  if (!open) return null;
+
   return (
-    <Dialog open={open} onOpenChange={(isOpen) => !isOpen && handleClose()}>
-      <DialogContent className="max-w-4xl h-[80vh] flex flex-col p-0 gap-0">
+    <>
+      <div className="h-full flex flex-col bg-background border-r border-border/60 overflow-hidden">
         <SftpModalHeader
+          onClose={handleClose}
           t={t}
           host={host}
           credentials={credentials}
@@ -753,7 +755,7 @@ const SFTPModal: React.FC<SFTPModalProps> = ({
           onDownloadSelected={handleDownloadSelected}
           onDeleteSelected={handleDeleteSelected}
         />
-      </DialogContent>
+      </div>
 
       <SftpModalDialogs
         t={t}
@@ -808,7 +810,7 @@ const SFTPModal: React.FC<SFTPModalProps> = ({
         editorWordWrap={editorWordWrap}
         onToggleWordWrap={() => setEditorWordWrap(!editorWordWrap)}
       />
-    </Dialog>
+    </>
   );
 };
 

components/ScriptsSidePanel.tsx

@@ -0,0 +1,221 @@
+/**
+ * ScriptsSidePanel - Lightweight scripts browser for the terminal side panel
+ *
+ * Shows snippets organized by package hierarchy with breadcrumb navigation.
+ * Clicking a snippet executes it in the focused terminal session.
+ */
+
+import { ChevronRight, Package, Search, Zap } from 'lucide-react';
+import React, { memo, useCallback, useMemo, useState } from 'react';
+import { useI18n } from '../application/i18n/I18nProvider';
+import { cn } from '../lib/utils';
+import { Snippet } from '../types';
+import { Input } from './ui/input';
+import { ScrollArea } from './ui/scroll-area';
+
+interface ScriptsSidePanelProps {
+  snippets: Snippet[];
+  packages: string[];
+  onSnippetClick: (command: string) => void;
+  isVisible?: boolean;
+}
+
+const ScriptsSidePanelInner: React.FC<ScriptsSidePanelProps> = ({
+  snippets,
+  packages,
+  onSnippetClick,
+  isVisible = true,
+}) => {
+  const { t } = useI18n();
+  const [selectedPackage, setSelectedPackage] = useState<string | null>(null);
+  const [search, setSearch] = useState('');
+
+  const displayedPackages = useMemo(() => {
+    if (!selectedPackage) {
+      const absolutePaths = packages.filter(p => p.startsWith('/'));
+      const relativePaths = packages.filter(p => !p.startsWith('/'));
+
+      const results: { name: string; path: string; count: number }[] = [];
+
+      const relativeRoots = relativePaths
+        .map((p) => p.split('/')[0])
+        .filter((name): name is string => Boolean(name) && name.length > 0);
+
+      Array.from(new Set(relativeRoots)).forEach((name: string) => {
+        const path: string = name;
+        const count = snippets.filter((s) => {
+          const pkg = s.package || '';
+          return pkg === path || pkg.startsWith(path + '/');
+        }).length;
+        results.push({ name, path, count });
+      });
+
+      const absoluteRoots = absolutePaths
+        .map((p) => {
+          const cleanPath = p.substring(1);
+          return cleanPath.split('/')[0];
+        })
+        .filter((name): name is string => Boolean(name) && name.length > 0);
+
+      Array.from(new Set(absoluteRoots)).forEach((name: string) => {
+        const path: string = `/${name}`;
+        const displayName: string = `/${name}`;
+        const count = snippets.filter((s) => {
+          const pkg = s.package || '';
+          return pkg === path || pkg.startsWith(path + '/');
+        }).length;
+        results.push({ name: displayName, path, count });
+      });
+
+      return results;
+    }
+
+    const prefix = selectedPackage + '/';
+    const children = packages
+      .filter((p) => p.startsWith(prefix))
+      .map((p) => p.replace(prefix, '').split('/')[0])
+      .filter((name): name is string => Boolean(name) && name.length > 0);
+    return Array.from(new Set(children)).map((name) => {
+      const path = `${selectedPackage}/${name}`;
+      const count = snippets.filter((s) => {
+        const pkg = s.package || '';
+        return pkg === path || pkg.startsWith(path + '/');
+      }).length;
+      return { name, path, count };
+    });
+  }, [packages, selectedPackage, snippets]);
+
+  const displayedSnippets = useMemo(() => {
+    let result = snippets.filter((s) => (s.package || '') === (selectedPackage || ''));
+    if (search.trim()) {
+      const s = search.toLowerCase();
+      result = result.filter(sn =>
+        sn.label.toLowerCase().includes(s) ||
+        sn.command.toLowerCase().includes(s)
+      );
+    }
+    return result;
+  }, [snippets, selectedPackage, search]);
+
+  // Also filter packages by search when at root level
+  const filteredPackages = useMemo(() => {
+    if (!search.trim()) return displayedPackages;
+    const s = search.toLowerCase();
+    return displayedPackages.filter(pkg => pkg.name.toLowerCase().includes(s));
+  }, [displayedPackages, search]);
+
+  const breadcrumb = useMemo(() => {
+    if (!selectedPackage) return [];
+    const isAbsolute = selectedPackage.startsWith('/');
+    const parts = selectedPackage.split('/').filter(Boolean);
+    return parts.map((name, idx) => {
+      const pathSegments = parts.slice(0, idx + 1);
+      const path = isAbsolute ? `/${pathSegments.join('/')}` : pathSegments.join('/');
+      return { name, path };
+    });
+  }, [selectedPackage]);
+
+  const handleSnippetClick = useCallback((command: string) => {
+    onSnippetClick(command);
+  }, [onSnippetClick]);
+
+  if (!isVisible) return null;
+
+  const hasAnyContent = snippets.length > 0 || packages.length > 0;
+
+  return (
+    <div className="h-full flex flex-col bg-background overflow-hidden">
+      {/* Search */}
+      <div className="shrink-0 px-2 py-1.5 border-b border-border/50">
+        <div className="relative">
+          <Search size={12} className="absolute left-2 top-1/2 -translate-y-1/2 text-muted-foreground" />
+          <Input
+            value={search}
+            onChange={(e) => setSearch(e.target.value)}
+            placeholder={t('snippets.searchPlaceholder')}
+            className="h-7 pl-7 text-xs bg-muted/30 border-none"
+          />
+        </div>
+      </div>
+
+      {/* Breadcrumb */}
+      <div className="shrink-0 flex items-center gap-1 px-3 py-1.5 text-[11px] border-b border-border/30 min-h-[28px]">
+        <button
+          className={cn(
+            "hover:text-primary transition-colors truncate",
+            !selectedPackage ? "text-foreground font-medium" : "text-muted-foreground"
+          )}
+          onClick={() => setSelectedPackage(null)}
+        >
+          {t('terminal.toolbar.library')}
+        </button>
+        {breadcrumb.map((b) => (
+          <React.Fragment key={b.path}>
+            <ChevronRight size={10} className="text-muted-foreground shrink-0" />
+            <button
+              className="text-muted-foreground hover:text-primary transition-colors truncate"
+              onClick={() => setSelectedPackage(b.path)}
+            >
+              {b.name}
+            </button>
+          </React.Fragment>
+        ))}
+      </div>
+
+      {/* Content */}
+      <ScrollArea className="flex-1">
+        <div className="py-1">
+          {!hasAnyContent && (
+            <div className="flex flex-col items-center justify-center py-8 text-muted-foreground">
+              <Zap size={24} className="opacity-40 mb-2" />
+              <span className="text-xs">{t('terminal.toolbar.noSnippets')}</span>
+            </div>
+          )}
+
+          {/* Packages */}
+          {filteredPackages.map((pkg) => (
+            <button
+              key={pkg.path}
+              className="w-full flex items-center gap-2.5 px-3 py-2 text-left hover:bg-accent/50 transition-colors"
+              onClick={() => { setSelectedPackage(pkg.path); setSearch(''); }}
+            >
+              <div className="w-6 h-6 rounded-md bg-primary/10 text-primary flex items-center justify-center shrink-0">
+                <Package size={12} />
+              </div>
+              <div className="flex-1 min-w-0">
+                <div className="text-xs font-medium truncate">{pkg.name}</div>
+                <div className="text-[10px] text-muted-foreground">
+                  {t('snippets.package.count', { count: pkg.count })}
+                </div>
+              </div>
+              <ChevronRight size={12} className="text-muted-foreground shrink-0" />
+            </button>
+          ))}
+
+          {/* Snippets */}
+          {displayedSnippets.map((s) => (
+            <button
+              key={s.id}
+              onClick={() => handleSnippetClick(s.command)}
+              className="w-full text-left px-3 py-2 hover:bg-accent/50 transition-colors flex flex-col gap-0.5"
+            >
+              <span className="text-xs font-medium truncate">{s.label}</span>
+              <span className="text-muted-foreground truncate font-mono text-[10px] max-w-full">
+                {s.command}
+              </span>
+            </button>
+          ))}
+
+          {hasAnyContent && displayedSnippets.length === 0 && filteredPackages.length === 0 && search.trim() && (
+            <div className="px-3 py-4 text-xs text-muted-foreground italic text-center">
+              {t('common.noResultsFound')}
+            </div>
+          )}
+        </div>
+      </ScrollArea>
+    </div>
+  );
+};
+
+export const ScriptsSidePanel = memo(ScriptsSidePanelInner);
+ScriptsSidePanel.displayName = 'ScriptsSidePanel';

components/SettingsPage.tsx

@@ -2,13 +2,14 @@
  * Settings Page - Standalone settings window content
  * This component is rendered in a separate Electron window
  */
-import { AppWindow, Cloud, FileType, HardDrive, Keyboard, Palette, TerminalSquare, X } from "lucide-react";
+import { AppWindow, Cloud, FileType, HardDrive, Keyboard, Palette, Sparkles, TerminalSquare, X } from "lucide-react";
 import React, { useCallback, useEffect, useMemo, useState } from "react";
 import { useSettingsState } from "../application/state/useSettingsState";
 import { usePortForwardingState } from "../application/state/usePortForwardingState";
 import { useVaultState } from "../application/state/useVaultState";
 import { useWindowControls } from "../application/state/useWindowControls";
 import { useUpdateCheck } from "../application/state/useUpdateCheck";
+import { useAIState } from "../application/state/useAIState";
 import { I18nProvider, useI18n } from "../application/i18n/I18nProvider";
 import SettingsApplicationTab from "./SettingsApplicationTab";
 import SettingsAppearanceTab from "./settings/tabs/SettingsAppearanceTab";
@@ -16,18 +17,41 @@ import SettingsFileAssociationsTab from "./settings/tabs/SettingsFileAssociation
 import SettingsShortcutsTab from "./settings/tabs/SettingsShortcutsTab";
 import SettingsTerminalTab from "./settings/tabs/SettingsTerminalTab";
 import SettingsSystemTab from "./settings/tabs/SettingsSystemTab";
+const SettingsAITab = React.lazy(() => import("./settings/tabs/SettingsAITab"));
 import { Tabs, TabsList, TabsTrigger } from "./ui/tabs";
 import type { TerminalFont } from "../infrastructure/config/fonts";
 
 const isMac = typeof navigator !== "undefined" && /Mac|iPhone|iPad/.test(navigator.platform);
 
+class AITabErrorBoundary extends React.Component<
+  { children: React.ReactNode },
+  { error: Error | null }
+> {
+  state: { error: Error | null } = { error: null };
+  static getDerivedStateFromError(error: Error) {
+    return { error };
+  }
+  render() {
+    if (this.state.error) {
+      return (
+        <div style={{ padding: 32, color: "#f87171", fontFamily: "monospace", whiteSpace: "pre-wrap" }}>
+          <h3 style={{ marginBottom: 8 }}>AI Settings Error</h3>
+          <div>{this.state.error.message}</div>
+          <div style={{ marginTop: 8, fontSize: 12, color: "#888" }}>{this.state.error.stack}</div>
+        </div>
+      );
+    }
+    return this.props.children;
+  }
+}
+
 type SettingsState = ReturnType<typeof useSettingsState> & {
     availableFonts: TerminalFont[];
 };
 
 const SettingsSyncTab = React.lazy(() => import("./settings/tabs/SettingsSyncTab"));
 
-const SettingsSyncTabWithVault: React.FC = () => {
+const SettingsSyncTabWithVault: React.FC<{ onSettingsApplied?: () => void }> = ({ onSettingsApplied }) => {
     const {
         hosts,
         keys,
@@ -66,6 +90,7 @@ const SettingsSyncTabWithVault: React.FC = () => {
             importDataFromString={importDataFromString}
             importPortForwardingRules={importPortForwardingRules}
             clearVaultData={clearVaultData}
+            onSettingsApplied={onSettingsApplied}
         />
     );
 };
@@ -73,7 +98,8 @@ const SettingsSyncTabWithVault: React.FC = () => {
 const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }) => {
     const { t } = useI18n();
     const { notifyRendererReady, closeSettingsWindow } = useWindowControls();
-    const { updateState, checkNow, installUpdate, openReleasePage } = useUpdateCheck();
+    const { updateState, checkNow, installUpdate, openReleasePage } = useUpdateCheck({ autoUpdateEnabled: settings.autoUpdateEnabled });
+    const aiState = useAIState();
     const [activeTab, setActiveTab] = useState("application");
     const [mountedTabs, setMountedTabs] = useState(() => new Set(["application"]));
 
@@ -152,6 +178,12 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                         >
                             <FileType size={14} /> {t("settings.tab.sftpFileAssociations")}
                         </TabsTrigger>
+                        <TabsTrigger
+                            value="ai"
+                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                        >
+                            <Sparkles size={14} /> AI
+                        </TabsTrigger>
                         <TabsTrigger
                             value="sync"
                             className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
@@ -228,9 +260,38 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                         <SettingsFileAssociationsTab />
                     )}
 
+                    {mountedTabs.has("ai") && (
+                        <AITabErrorBoundary>
+                        <React.Suspense fallback={null}>
+                        <SettingsAITab
+                            providers={aiState.providers}
+                            addProvider={aiState.addProvider}
+                            updateProvider={aiState.updateProvider}
+                            removeProvider={aiState.removeProvider}
+                            activeProviderId={aiState.activeProviderId}
+                            setActiveProviderId={aiState.setActiveProviderId}
+                            activeModelId={aiState.activeModelId}
+                            setActiveModelId={aiState.setActiveModelId}
+                            globalPermissionMode={aiState.globalPermissionMode}
+                            setGlobalPermissionMode={aiState.setGlobalPermissionMode}
+                            externalAgents={aiState.externalAgents}
+                            setExternalAgents={aiState.setExternalAgents}
+                            defaultAgentId={aiState.defaultAgentId}
+                            setDefaultAgentId={aiState.setDefaultAgentId}
+                            commandBlocklist={aiState.commandBlocklist}
+                            setCommandBlocklist={aiState.setCommandBlocklist}
+                            commandTimeout={aiState.commandTimeout}
+                            setCommandTimeout={aiState.setCommandTimeout}
+                            maxIterations={aiState.maxIterations}
+                            setMaxIterations={aiState.setMaxIterations}
+                        />
+                        </React.Suspense>
+                        </AITabErrorBoundary>
+                    )}
+
                     {mountedTabs.has("sync") && (
                         <React.Suspense fallback={null}>
-                            <SettingsSyncTabWithVault />
+                            <SettingsSyncTabWithVault onSettingsApplied={settings.rehydrateAllFromStorage} />
                         </React.Suspense>
                     )}
 
@@ -247,6 +308,10 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                             closeToTray={settings.closeToTray}
                             setCloseToTray={settings.setCloseToTray}
                             hotkeyRegistrationError={settings.hotkeyRegistrationError}
+                            globalHotkeyEnabled={settings.globalHotkeyEnabled}
+                            setGlobalHotkeyEnabled={settings.setGlobalHotkeyEnabled}
+                            autoUpdateEnabled={settings.autoUpdateEnabled}
+                            setAutoUpdateEnabled={settings.setAutoUpdateEnabled}
                             updateState={updateState}
                             checkNow={checkNow}
                             installUpdate={installUpdate}

components/SftpSidePanel.tsx

@@ -0,0 +1,618 @@
+/**
+ * SftpSidePanel - SFTP file browser rendered as a resizable side panel
+ *
+ * Reuses SftpView's components (SftpPaneView, SftpContextProvider, etc.)
+ * to provide a unified SFTP experience. Renders a single pane (left side only).
+ *
+ * IMPORTANT: Does NOT use the global activeTabStore to avoid conflicts with
+ * the main SftpView tab. Instead manages pane visibility internally.
+ *
+ * Used in TerminalLayer to provide SFTP alongside terminal sessions.
+ */
+
+import React, { memo, useCallback, useEffect, useMemo, useRef } from "react";
+import { useI18n } from "../application/i18n/I18nProvider";
+import { useSftpState } from "../application/state/useSftpState";
+import { useSftpBackend } from "../application/state/useSftpBackend";
+import { useSftpFileAssociations } from "../application/state/useSftpFileAssociations";
+import { getParentPath } from "../application/state/sftp/utils";
+import { buildCacheKey } from "../application/state/sftp/sharedRemoteHostCache";
+import { logger } from "../lib/logger";
+import type { DropEntry } from "../lib/sftpFileUtils";
+import { Host, Identity, SSHKey } from "../types";
+import type { TransferTask } from "../types";
+import { toast } from "./ui/toast";
+import { DistroAvatar } from "./DistroAvatar";
+
+import { SftpPaneView } from "./sftp/SftpPaneView";
+import { SftpOverlays } from "./sftp/SftpOverlays";
+import { SftpTransferQueue } from "./sftp/SftpTransferQueue";
+import { SftpContextProvider } from "./sftp";
+import { useSftpViewPaneCallbacks } from "./sftp/hooks/useSftpViewPaneCallbacks";
+import { useSftpViewTabs } from "./sftp/hooks/useSftpViewTabs";
+
+interface SftpSidePanelProps {
+  hosts: Host[];
+  keys: SSHKey[];
+  identities: Identity[];
+  updateHosts: (hosts: Host[]) => void;
+  /** The host to connect to (follows focused terminal) */
+  activeHost: Host | null;
+  initialLocation?: { hostId: string; path: string } | null;
+  showWorkspaceHostHeader?: boolean;
+  isVisible?: boolean;
+  renderOverlays?: boolean;
+  pendingUpload?: {
+    requestId: string;
+    hostId: string;
+    connectionKey: string;
+    targetPath?: string;
+    entries: DropEntry[];
+  } | null;
+  onPendingUploadHandled?: (requestId: string) => void;
+  sftpDoubleClickBehavior: "open" | "transfer";
+  sftpAutoSync: boolean;
+  sftpShowHiddenFiles: boolean;
+  sftpUseCompressedUpload: boolean;
+  editorWordWrap: boolean;
+  setEditorWordWrap: (value: boolean) => void;
+  onGetTerminalCwd?: () => Promise<string | null>;
+}
+
+const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
+  hosts,
+  keys,
+  identities,
+  updateHosts,
+  activeHost,
+  initialLocation,
+  showWorkspaceHostHeader = false,
+  isVisible = true,
+  renderOverlays = true,
+  pendingUpload = null,
+  onPendingUploadHandled,
+  sftpDoubleClickBehavior,
+  sftpAutoSync,
+  sftpShowHiddenFiles,
+  sftpUseCompressedUpload,
+  editorWordWrap,
+  setEditorWordWrap,
+  onGetTerminalCwd,
+}) => {
+  const { t } = useI18n();
+
+  const fileWatchHandlers = useMemo(() => ({
+    onFileWatchSynced: (payload: { remotePath: string }) => {
+      const fileName = payload.remotePath.split('/').pop() || payload.remotePath;
+      toast.success(t('sftp.autoSync.success', { fileName }));
+      logger.info("[SFTP] File auto-synced to remote", payload);
+    },
+    onFileWatchError: (payload: { error: string }) => {
+      toast.error(t('sftp.autoSync.error', { error: payload.error }));
+      logger.error("[SFTP] File auto-sync failed", payload);
+    },
+  }), [t]);
+
+  const sftpOptions = useMemo(() => ({
+    ...fileWatchHandlers,
+    useCompressedUpload: sftpUseCompressedUpload,
+    defaultShowHiddenFiles: sftpShowHiddenFiles,
+    autoConnectLocalOnMount: false,
+  }), [fileWatchHandlers, sftpUseCompressedUpload, sftpShowHiddenFiles]);
+
+  const sftp = useSftpState(hosts, keys, identities, sftpOptions);
+  const { showSaveDialog, startStreamTransfer } = useSftpBackend();
+
+  const sftpRef = useRef(sftp);
+  sftpRef.current = sftp;
+
+  const behaviorRef = useRef(sftpDoubleClickBehavior);
+  behaviorRef.current = sftpDoubleClickBehavior;
+
+  const autoSyncRef = useRef(sftpAutoSync);
+  autoSyncRef.current = sftpAutoSync;
+
+  const { getOpenerForFile, setOpenerForExtension } = useSftpFileAssociations();
+  const getOpenerForFileRef = useRef(getOpenerForFile);
+  getOpenerForFileRef.current = getOpenerForFile;
+
+  const handleToggleHiddenFiles = useCallback((paneId: string) => {
+    const pane = sftpRef.current.leftTabs.tabs.find((tab) => tab.id === paneId);
+    if (!pane) return;
+    sftpRef.current.setShowHiddenFiles("left", paneId, !pane.showHiddenFiles);
+  }, []);
+
+  // NOTE: We intentionally do NOT sync to activeTabStore here.
+  // activeTabStore is a global singleton shared with SftpView.
+  // Writing to it here would corrupt SftpView's left pane visibility.
+
+  const {
+    leftCallbacks,
+    rightCallbacks,
+    dragCallbacks,
+    draggedFiles,
+    permissionsState,
+    setPermissionsState,
+    showTextEditor,
+    setShowTextEditor,
+    textEditorTarget,
+    setTextEditorTarget,
+    textEditorContent,
+    setTextEditorContent,
+    showFileOpenerDialog,
+    setShowFileOpenerDialog,
+    fileOpenerTarget,
+    setFileOpenerTarget,
+    handleSaveTextFile,
+    handleFileOpenerSelect,
+    handleSelectSystemApp,
+  } = useSftpViewPaneCallbacks({
+    sftpRef,
+    behaviorRef,
+    autoSyncRef,
+    getOpenerForFileRef,
+    setOpenerForExtension,
+    t,
+    showSaveDialog,
+    startStreamTransfer,
+    getSftpIdForConnection: sftp.getSftpIdForConnection,
+  });
+
+  const {
+    leftPanes,
+    showHostPickerLeft,
+    showHostPickerRight,
+    hostSearchLeft,
+    hostSearchRight,
+    setShowHostPickerLeft,
+    setShowHostPickerRight,
+    setHostSearchLeft,
+    setHostSearchRight,
+    handleHostSelectLeft,
+    handleHostSelectRight,
+  } = useSftpViewTabs({ sftp, sftpRef });
+
+  // Auto-connect when activeHost changes.
+  // Uses sftpRef to avoid re-triggering on every sftp state change.
+  const connectedKeyRef = useRef<string | null>(null);
+  // Store the Host object used for the current connection so the header
+  // can show session-time overrides even during deferred host switches.
+  const connectedHostObjRef = useRef<Host | null>(null);
+  const lastAppliedInitialLocationKeyRef = useRef<string | null>(null);
+  const handledPendingUploadIdRef = useRef<string | null>(null);
+  // Maps tab IDs to the connectionKey used to create them, so we can
+  // correctly identify tabs when the same host ID has different overrides.
+  const tabConnectionKeyMapRef = useRef<Map<string, string>>(new Map());
+  const pendingConnectionKeyRef = useRef<string | null>(null);
+  const prevIsVisibleRef = useRef(isVisible);
+
+  // Reset location guard when the panel is reopened so the terminal cwd
+  // is re-applied even if it matches the previous session's path.
+  useEffect(() => {
+    if (isVisible && !prevIsVisibleRef.current) {
+      lastAppliedInitialLocationKeyRef.current = null;
+    }
+    prevIsVisibleRef.current = isVisible;
+  }, [isVisible]);
+
+  // Navigate SFTP to the terminal's current working directory
+  const handleGoToTerminalCwd = useCallback(async () => {
+    if (!onGetTerminalCwd) return;
+    const cwd = await onGetTerminalCwd();
+    if (cwd) {
+      sftpRef.current.navigateTo("left", cwd);
+    }
+  }, [onGetTerminalCwd]);
+
+  // Track whether there's active work that should block connection switching.
+  // Computed outside the effect so it can be in the dependency array.
+  const hasActiveTransfers = useMemo(
+    () => sftp.transfers.some((t) => t.status === "pending" || t.status === "transferring"),
+    [sftp.transfers],
+  );
+  // Block host-following while any connection-sensitive UI or operation
+  // is active: text editor, permissions dialog, file-opener dialog, or
+  // auto-synced external file watches.
+  const hasActiveWork = hasActiveTransfers || showTextEditor || !!permissionsState || showFileOpenerDialog
+    || (sftp.activeFileWatchCountRef?.current ?? 0) > 0;
+
+  useEffect(() => {
+    if (!activeHost) return;
+
+    const s = sftpRef.current;
+
+    // Serial terminals don't support SFTP — disconnect any existing
+    // connection (remote or local) so the panel doesn't remain bound to
+    // a previous host.
+    const proto = activeHost.protocol;
+    if (proto === 'serial' || activeHost.id?.startsWith('serial-')) {
+      // Serial terminals don't support SFTP. Just clear the tracked
+      // connection key so switching back to a remote terminal will
+      // trigger auto-connect. Don't disconnect existing tabs — they
+      // may be reused when focus returns.
+      connectedKeyRef.current = null;
+      return;
+    }
+    // Local terminals connect to the local file browser
+    if (proto === 'local' || activeHost.id?.startsWith('local-')) {
+      if (hasActiveWork) return;
+      const leftConn = s.leftPane.connection;
+      if (leftConn?.isLocal) {
+        // Already connected locally
+        connectedKeyRef.current = "local";
+        return;
+      }
+      // Check for an existing local tab to reuse
+      const existingLocalTab = s.leftTabs.tabs.find((tab) =>
+        tab.connection?.isLocal && tab.connection.status === "connected",
+      );
+      if (existingLocalTab) {
+        s.selectTab("left", existingLocalTab.id);
+        connectedKeyRef.current = "local";
+        return;
+      }
+      connectedKeyRef.current = "local";
+      // Preserve existing remote tab when switching to local
+      const needsNewTab = !!(leftConn && leftConn.status === "connected");
+      if (needsNewTab) {
+        s.connect("left", "local", { forceNewTab: true });
+      } else if (leftConn) {
+        // Await disconnect before connecting locally to avoid the async
+        // disconnect wiping out the fresh local connection.
+        void s.disconnect("left").then(() => s.connect("left", "local"));
+      } else {
+        s.connect("left", "local");
+      }
+      return;
+    }
+    // Build a connection key that accounts for session-time overrides
+    // (same host ID may have different port/protocol in different workspace panes).
+    // Uses buildCacheKey to stay consistent with the key recorded on upload tasks.
+    const connectionKey = buildCacheKey(activeHost.id, activeHost.hostname, activeHost.port, activeHost.protocol, activeHost.sftpSudo, activeHost.username);
+    if (connectedKeyRef.current === connectionKey) return;
+
+    // Don't switch connections while transfers or editor are active
+    if (hasActiveWork) return;
+    logger.info("[SftpSidePanel] Auto-connect triggered", {
+      hostId: activeHost.id,
+      hostLabel: activeHost.label,
+      protocol: activeHost.protocol,
+      hostname: activeHost.hostname,
+    });
+
+    // Check if an existing SFTP tab matches this exact endpoint.
+    // We track which connectionKey was used to create each tab so that
+    // tabs for the same host ID with different session-time overrides
+    // (port/protocol) are not incorrectly reused.
+    const tabs = s.leftTabs.tabs;
+    const existingTab = tabs.find((tab) => {
+      if (!tab.connection || tab.connection.hostId !== activeHost.id) return false;
+      // Don't reuse errored tabs — they need a fresh connection
+      if (tab.connection.status === "error" || tab.connection.status === "disconnected") return false;
+      return tabConnectionKeyMapRef.current.get(tab.id) === connectionKey;
+    });
+    if (existingTab) {
+      s.selectTab("left", existingTab.id);
+      connectedKeyRef.current = connectionKey;
+      connectedHostObjRef.current = activeHost;
+      return;
+    }
+
+    // Create a new tab when there's already an active connection to a different
+    // host, so the previous tab is preserved for instant switching on focus change.
+    const currentConn = s.leftPane.connection;
+    const needsNewTab = !!(currentConn && currentConn.status === "connected" && currentConn.hostId !== activeHost.id);
+
+    connectedKeyRef.current = connectionKey;
+    connectedHostObjRef.current = activeHost;
+    // Store the pending key so the effect below can map it once the tab is created
+    pendingConnectionKeyRef.current = connectionKey;
+    s.connect("left", activeHost, needsNewTab ? { forceNewTab: true } : undefined);
+  }, [activeHost, hasActiveWork]); // Re-evaluate when work finishes so deferred switch can proceed
+
+  // Track the active tab's connectionKey after connect() creates or reuses it.
+  // Watches both activeTabId (new tab) and connection status (reused tab reconnecting).
+  useEffect(() => {
+    const activeTabId = sftp.leftTabs.activeTabId;
+    if (activeTabId && pendingConnectionKeyRef.current) {
+      tabConnectionKeyMapRef.current.set(activeTabId, pendingConnectionKeyRef.current);
+      pendingConnectionKeyRef.current = null;
+    }
+  }, [sftp.leftTabs.activeTabId, sftp.leftPane.connection?.status]);
+
+  // Clear the remembered connection key when the pane disconnects or the
+  // session is lost, so re-opening SFTP for the same terminal reconnects.
+  // Also reset the file-watch counter — watches are bound to the SFTP session,
+  // so they stop when the session disconnects.
+  useEffect(() => {
+    const connection = sftp.leftPane.connection;
+    if (!connection || connection.status === "error" || connection.status === "disconnected") {
+      connectedKeyRef.current = null;
+      if (sftp.activeFileWatchCountRef) {
+        sftp.activeFileWatchCountRef.current = 0;
+      }
+    }
+  }, [sftp.leftPane.connection, sftp.leftPane.connection?.status, sftp.activeFileWatchCountRef]);
+
+  useEffect(() => {
+    if (!activeHost || !initialLocation) return;
+    if (initialLocation.hostId !== activeHost.id || !initialLocation.path) return;
+
+    const activePane = sftpRef.current.leftPane;
+    const connection = activePane.connection;
+    if (!connection || connection.isLocal || connection.hostId !== activeHost.id) return;
+    if (connection.status !== "connected") return;
+
+    // Include full endpoint key so that same-hostId sessions with
+    // different overrides each get their initial location applied.
+    const locationKey = `${connectedKeyRef.current}:${initialLocation.path}`;
+    if (lastAppliedInitialLocationKeyRef.current === locationKey) return;
+
+    if (connection.currentPath === initialLocation.path) {
+      lastAppliedInitialLocationKeyRef.current = locationKey;
+      return;
+    }
+
+    lastAppliedInitialLocationKeyRef.current = locationKey;
+    sftpRef.current.navigateTo("left", initialLocation.path);
+  }, [
+    activeHost,
+    initialLocation,
+    sftp.leftPane,
+  ]);
+
+  useEffect(() => {
+    if (!pendingUpload || !activeHost) return;
+    if (handledPendingUploadIdRef.current === pendingUpload.requestId) return;
+    if (pendingUpload.hostId !== activeHost.id) return;
+
+    const activePane = sftp.leftPane;
+    const connection = activePane.connection;
+    if (!connection || connection.isLocal || connection.hostId !== activeHost.id) return;
+    if (connection.status !== "connected") return;
+
+    handledPendingUploadIdRef.current = pendingUpload.requestId;
+
+    const runUpload = async () => {
+      try {
+        const results = await sftpRef.current.uploadExternalEntries("left", pendingUpload.entries, {
+          targetPath: pendingUpload.targetPath,
+        });
+        if (results.some((result) => result.cancelled)) {
+          toast.info(t("sftp.upload.cancelled"), "SFTP");
+          return;
+        }
+
+        const failCount = results.filter((result) => !result.success && !result.cancelled).length;
+        const successCount = results.filter((result) => result.success).length;
+
+        if (failCount === 0) {
+          const message =
+            successCount === 1
+              ? `${t("sftp.upload")}: ${results[0]?.fileName ?? ""}`
+              : `${t("sftp.uploadFiles")}: ${successCount}`;
+          toast.success(message, "SFTP");
+        } else {
+          const failedFiles = results.filter((result) => !result.success && !result.cancelled);
+          failedFiles.forEach((failed) => {
+            const errorMsg = failed.error ? ` - ${failed.error}` : "";
+            toast.error(
+              `${t("sftp.error.uploadFailed")}: ${failed.fileName}${errorMsg}`,
+              "SFTP",
+            );
+          });
+        }
+      } catch (error) {
+        logger.error("[SftpSidePanel] Failed to upload dropped files:", error);
+        handledPendingUploadIdRef.current = null;
+        toast.error(
+          error instanceof Error ? error.message : t("sftp.error.uploadFailed"),
+          "SFTP",
+        );
+        return;
+      } finally {
+        onPendingUploadHandled?.(pendingUpload.requestId);
+      }
+    };
+
+    void runUpload();
+  }, [
+    activeHost,
+    onPendingUploadHandled,
+    pendingUpload,
+    sftp.leftPane,
+    t,
+  ]);
+
+  const MAX_VISIBLE_TRANSFERS = 5;
+  const visibleTransfers = useMemo(
+    () => [...sftp.transfers].reverse().slice(0, MAX_VISIBLE_TRANSFERS),
+    [sftp.transfers],
+  );
+
+  const handleRevealTransferTarget = useCallback(
+    async (task: TransferTask) => {
+      const connection = sftpRef.current.leftPane.connection;
+      if (!connection || connection.isLocal) return;
+
+      const revealPath = task.isDirectory ? task.targetPath : getParentPath(task.targetPath);
+      await sftpRef.current.navigateTo("left", revealPath, { force: true });
+    },
+    [],
+  );
+
+  const canRevealTransferTarget = useCallback(
+    (task: TransferTask) => {
+      if (task.status !== "completed") return false;
+      if (task.direction !== "upload" && task.direction !== "remote-to-remote") return false;
+
+      const connection = sftp.leftPane.connection;
+      if (!connection || connection.isLocal) return false;
+
+      if (task.targetHostId) {
+        if (connection.hostId !== task.targetHostId) return false;
+        // If the transfer recorded a full endpoint key, use it to
+        // distinguish same-hostId uploads with different session overrides.
+        if (task.targetConnectionKey) {
+          return connectedKeyRef.current === task.targetConnectionKey;
+        }
+        return true;
+      }
+
+      return connection.id === task.targetConnectionId;
+    },
+    [sftp.leftPane.connection],
+  );
+
+  // When the auto-connect effect defers a switch (active transfers or open
+  // editor), the panel still operates on the current connection, not
+  // activeHost.  Use the connected host for the header so the label matches
+  // what browse/edit/delete actions actually target.
+  const displayHost = useMemo(() => {
+    const conn = sftp.leftPane.connection;
+    if (conn && !conn.isLocal) {
+      // Prefer the stored Host object from connect time — it preserves
+      // session-time overrides that the vault host may lack.
+      if (connectedHostObjRef.current && connectedHostObjRef.current.id === conn.hostId) {
+        return connectedHostObjRef.current;
+      }
+      return hosts.find((h) => h.id === conn.hostId) ?? activeHost;
+    }
+    return activeHost;
+  }, [sftp.leftPane.connection, hosts, activeHost]);
+
+  // Determine the active pane to render (without using global activeTabStore)
+  const activeLeftPaneId = sftp.leftTabs.activeTabId;
+
+  return (
+    <SftpContextProvider
+      hosts={hosts}
+      updateHosts={updateHosts}
+      draggedFiles={draggedFiles}
+      dragCallbacks={dragCallbacks}
+      leftCallbacks={leftCallbacks}
+      rightCallbacks={rightCallbacks}
+    >
+      <div
+        className="h-full flex flex-col bg-background overflow-hidden"
+        style={isVisible ? undefined : { display: "none" }}
+        aria-hidden={!isVisible}
+      >
+        {showWorkspaceHostHeader && displayHost && (
+          <div className="shrink-0 border-b border-border/50 bg-muted/20 px-3 py-1.5">
+            <div className="flex items-center gap-2 min-w-0">
+              <DistroAvatar
+                host={displayHost}
+                fallback={displayHost.label.slice(0, 2).toUpperCase()}
+                size="sm"
+                className="h-5 w-5 rounded-sm shrink-0"
+              />
+              <div
+                className="min-w-0 flex-1 max-w-[calc(100%-1.75rem)] text-[11px] leading-5 truncate"
+                title={`${displayHost.label} · ${(displayHost.username || "root")}@${displayHost.hostname}:${displayHost.port || 22}`}
+              >
+                <span className="font-medium">
+                  {displayHost.label}
+                </span>
+                <span className="mx-1 text-muted-foreground">·</span>
+                <span className="font-mono text-muted-foreground">
+                  {(displayHost.username || "root")}@{displayHost.hostname}:{displayHost.port || 22}
+                </span>
+              </div>
+            </div>
+          </div>
+        )}
+        {/* File browser pane - render only the active pane */}
+        <div className="relative flex-1 min-h-0">
+          {leftPanes.map((pane, idx) => {
+            // Manage visibility locally instead of via activeTabStore
+            const isActive = activeLeftPaneId
+              ? pane.id === activeLeftPaneId
+              : idx === 0;
+            if (!isActive) return null;
+
+            return (
+              <div key={pane.id} className="absolute inset-0 z-10">
+                <SftpPaneView
+                  side="left"
+                  pane={pane}
+                  showHeader
+                  showEmptyHeader
+                  onToggleShowHiddenFiles={() => handleToggleHiddenFiles(pane.id)}
+                  onGoToTerminalCwd={onGetTerminalCwd ? handleGoToTerminalCwd : undefined}
+                />
+              </div>
+            );
+          })}
+        </div>
+        <SftpTransferQueue
+          sftp={sftp}
+          visibleTransfers={visibleTransfers}
+          canRevealTransferTarget={canRevealTransferTarget}
+          onRevealTransferTarget={handleRevealTransferTarget}
+        />
+      </div>
+
+      {renderOverlays && (
+        <SftpOverlays
+          hosts={hosts}
+          sftp={sftp}
+          visibleTransfers={visibleTransfers}
+          showTransferQueue={false}
+          showHostPickerLeft={showHostPickerLeft}
+          showHostPickerRight={showHostPickerRight}
+          hostSearchLeft={hostSearchLeft}
+          hostSearchRight={hostSearchRight}
+          setShowHostPickerLeft={setShowHostPickerLeft}
+          setShowHostPickerRight={setShowHostPickerRight}
+          setHostSearchLeft={setHostSearchLeft}
+          setHostSearchRight={setHostSearchRight}
+          handleHostSelectLeft={handleHostSelectLeft}
+          handleHostSelectRight={handleHostSelectRight}
+          permissionsState={permissionsState}
+          setPermissionsState={setPermissionsState}
+          showTextEditor={showTextEditor}
+          setShowTextEditor={setShowTextEditor}
+          textEditorTarget={textEditorTarget}
+          setTextEditorTarget={setTextEditorTarget}
+          textEditorContent={textEditorContent}
+          setTextEditorContent={setTextEditorContent}
+          handleSaveTextFile={handleSaveTextFile}
+          editorWordWrap={editorWordWrap}
+          setEditorWordWrap={setEditorWordWrap}
+          showFileOpenerDialog={showFileOpenerDialog}
+          setShowFileOpenerDialog={setShowFileOpenerDialog}
+          fileOpenerTarget={fileOpenerTarget}
+          setFileOpenerTarget={setFileOpenerTarget}
+          handleFileOpenerSelect={handleFileOpenerSelect}
+          handleSelectSystemApp={handleSelectSystemApp}
+          t={t}
+        />
+      )}
+    </SftpContextProvider>
+  );
+};
+
+const sidePanelAreEqual = (prev: SftpSidePanelProps, next: SftpSidePanelProps): boolean =>
+  prev.hosts === next.hosts &&
+  prev.keys === next.keys &&
+  prev.identities === next.identities &&
+  prev.updateHosts === next.updateHosts &&
+  prev.activeHost === next.activeHost &&
+  prev.showWorkspaceHostHeader === next.showWorkspaceHostHeader &&
+  prev.isVisible === next.isVisible &&
+  prev.renderOverlays === next.renderOverlays &&
+  prev.pendingUpload?.requestId === next.pendingUpload?.requestId &&
+  prev.onPendingUploadHandled === next.onPendingUploadHandled &&
+  prev.sftpDoubleClickBehavior === next.sftpDoubleClickBehavior &&
+  prev.sftpAutoSync === next.sftpAutoSync &&
+  prev.sftpShowHiddenFiles === next.sftpShowHiddenFiles &&
+  prev.sftpUseCompressedUpload === next.sftpUseCompressedUpload &&
+  prev.editorWordWrap === next.editorWordWrap &&
+  prev.setEditorWordWrap === next.setEditorWordWrap &&
+  prev.onGetTerminalCwd === next.onGetTerminalCwd &&
+  prev.initialLocation?.hostId === next.initialLocation?.hostId &&
+  prev.initialLocation?.path === next.initialLocation?.path;
+
+export const SftpSidePanel = memo(SftpSidePanelInner, sidePanelAreEqual);
+SftpSidePanel.displayName = "SftpSidePanel";

components/SnippetsManager.tsx

@@ -28,6 +28,7 @@ interface SnippetsManagerProps {
   hotkeyScheme: HotkeyScheme;
   keyBindings: KeyBinding[];
   onSave: (snippet: Snippet) => void;
+  onBulkSave: (snippets: Snippet[]) => void;
   onDelete: (id: string) => void;
   onPackagesChange: (packages: string[]) => void;
   onRunSnippet?: (snippet: Snippet, targetHosts: Host[]) => void;
@@ -51,6 +52,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
   hotkeyScheme,
   keyBindings,
   onSave,
+  onBulkSave,
   onDelete,
   onPackagesChange,
   onRunSnippet,
@@ -486,11 +488,8 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
     // Update packages first, then save snippets
     onPackagesChange(keep);
     
-    // Only save snippets that were actually modified
-    const modifiedSnippets = updatedSnippets.filter((s, index) => 
-      s.package !== snippets[index].package
-    );
-    modifiedSnippets.forEach(onSave);
+    // Bulk-save all snippets to avoid stale-closure overwrites
+    onBulkSave(updatedSnippets);
     
     // Reset selected package if it was deleted
     if (selectedPackage && (selectedPackage === path || selectedPackage.startsWith(path + '/'))) {
@@ -527,7 +526,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
     });
 
     onPackagesChange(Array.from(new Set(updatedPackages)));
-    updatedSnippets.forEach(onSave);
+    onBulkSave(updatedSnippets);
     if (selectedPackage === source) setSelectedPackage(newPath);
   };
 
@@ -568,8 +567,8 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
       return;
     }
 
-    // Validate: duplicate (case-insensitive)
-    const existingPackage = packages.find(p => p.toLowerCase() === newPath.toLowerCase());
+    // Validate: duplicate (case-insensitive), excluding the package being renamed
+    const existingPackage = packages.find(p => p !== renamingPackagePath && p.toLowerCase() === newPath.toLowerCase());
     if (existingPackage) {
       setRenameError(t('snippets.renameDialog.error.duplicate'));
       return;
@@ -595,7 +594,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
     });
 
     onPackagesChange(Array.from(new Set(updatedPackages)));
-    updatedSnippets.forEach(onSave);
+    onBulkSave(updatedSnippets);
 
     // Update selected package if it was renamed
     if (selectedPackage === renamingPackagePath) {

components/Terminal.tsx

@@ -4,8 +4,8 @@ import { SerializeAddon } from "@xterm/addon-serialize";
 import { SearchAddon } from "@xterm/addon-search";
 import "@xterm/xterm/css/xterm.css";
 import { Cpu, HardDrive, Maximize2, MemoryStick, Radio, ArrowDownToLine, ArrowUpFromLine } from "lucide-react";
-import React, { memo, useEffect, useMemo, useRef, useState } from "react";
-import { flushSync } from "react-dom";
+import React, { memo, useCallback, useEffect, useMemo, useRef, useState } from "react";
+// flushSync removed - no longer needed
 import { useI18n } from "../application/i18n/I18nProvider";
 import { logger } from "../lib/logger";
 import { cn } from "../lib/utils";
@@ -28,7 +28,7 @@ import {
 import { resolveHostAuth } from "../domain/sshAuth";
 import { useTerminalBackend } from "../application/state/useTerminalBackend";
 import KnownHostConfirmDialog, { HostKeyInfo } from "./KnownHostConfirmDialog";
-import SFTPModal from "./SFTPModal";
+// SFTPModal removed - SFTP is now handled by SftpSidePanel in TerminalLayer
 import { Button } from "./ui/button";
 import { HoverCard, HoverCardContent, HoverCardTrigger } from "./ui/hover-card";
 import { toast } from "./ui/toast";
@@ -119,9 +119,6 @@ interface TerminalProps {
   sessionId: string;
   startupCommand?: string;
   serialConfig?: SerialConfig;
-  onUpdateTerminalThemeId?: (themeId: string) => void;
-  onUpdateTerminalFontFamilyId?: (fontFamilyId: string) => void;
-  onUpdateTerminalFontSize?: (fontSize: number) => void;
   hotkeyScheme?: "disabled" | "mac" | "pc";
   keyBindings?: KeyBinding[];
   onHotkeyAction?: (action: string, event: KeyboardEvent) => void;
@@ -141,6 +138,14 @@ interface TerminalProps {
   ) => void;
   onSplitHorizontal?: () => void;
   onSplitVertical?: () => void;
+  onOpenSftp?: (
+    host: Host,
+    initialPath?: string,
+    pendingUploadEntries?: DropEntry[],
+    sourceSessionId?: string,
+  ) => void;
+  onOpenScripts?: () => void;
+  onOpenTheme?: () => void;
   isBroadcastEnabled?: boolean;
   onToggleBroadcast?: () => void;
   onToggleComposeBar?: () => void;
@@ -180,9 +185,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   sessionId,
   startupCommand,
   serialConfig,
-  onUpdateTerminalThemeId,
-  onUpdateTerminalFontFamilyId,
-  onUpdateTerminalFontSize,
   hotkeyScheme = "disabled",
   keyBindings = [],
   onHotkeyAction,
@@ -197,6 +199,9 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   onCommandExecuted,
   onSplitHorizontal,
   onSplitVertical,
+  onOpenSftp,
+  onOpenScripts,
+  onOpenTheme,
   isBroadcastEnabled,
   onToggleBroadcast,
   onToggleComposeBar,
@@ -228,6 +233,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const isVisibleRef = useRef(isVisible);
   isVisibleRef.current = isVisible;
   const pendingOutputScrollRef = useRef(false);
+  const lastFittedSizeRef = useRef<{ width: number; height: number } | null>(null);
 
   useEffect(() => {
     if (xtermRuntimeRef.current) {
@@ -279,7 +285,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
 
 
-  const [isScriptsOpen, setIsScriptsOpen] = useState(false);
+  // isScriptsOpen state removed - scripts now handled by side panel
   const [status, setStatus] = useState<TerminalSession["status"]>("connecting");
   const [error, setError] = useState<string | null>(null);
   const lastToastedErrorRef = useRef<string | null>(null);
@@ -288,7 +294,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const [timeLeft, setTimeLeft] = useState(CONNECTION_TIMEOUT / 1000);
   const [isCancelling, setIsCancelling] = useState(false);
   const [showSFTP, setShowSFTP] = useState(false);
-  const [sftpInitialPath, setSftpInitialPath] = useState<string | undefined>(undefined);
   const [progressValue, setProgressValue] = useState(15);
   const [hasSelection, setHasSelection] = useState(false);
 
@@ -304,7 +309,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   // Drag and drop state
   const [isDraggingOver, setIsDraggingOver] = useState(false);
   const dragCounterRef = useRef(0);
-  const [pendingUploadEntries, setPendingUploadEntries] = useState<DropEntry[]>([]);
+  // pendingUploadEntries removed - drag-drop uploads now handled by SftpSidePanel
   const [isComposeBarOpen, setIsComposeBarOpen] = useState(false);
   const [terminalEncoding, setTerminalEncoding] = useState<'utf-8' | 'gb18030'>(() => {
     if (host?.charset && /^gb/i.test(String(host.charset).trim())) return 'gb18030';
@@ -366,6 +371,27 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const [pendingHostKeyInfo, setPendingHostKeyInfo] = useState<HostKeyInfo | null>(null);
   const pendingConnectionRef = useRef<(() => void) | null>(null);
 
+  // OSC-52 clipboard read prompt
+  const [osc52ReadPromptVisible, setOsc52ReadPromptVisible] = useState(false);
+  const osc52ReadResolverRef = useRef<((allowed: boolean) => void) | null>(null);
+  const handleOsc52ReadRequest = useCallback((): Promise<boolean> => {
+    // Reject if terminal is not visible (background tab) — user can't see the prompt
+    if (!isVisibleRef.current) return Promise.resolve(false);
+    // Reject if another prompt is already pending (avoid resolver overwrite)
+    if (osc52ReadResolverRef.current) return Promise.resolve(false);
+    return new Promise((resolve) => {
+      osc52ReadResolverRef.current = resolve;
+      setOsc52ReadPromptVisible(true);
+    });
+  }, []);
+  const handleOsc52ReadResponse = useCallback((allowed: boolean) => {
+    setOsc52ReadPromptVisible(false);
+    osc52ReadResolverRef.current?.(allowed);
+    osc52ReadResolverRef.current = null;
+    // Restore focus to terminal
+    termRef.current?.focus();
+  }, []);
+
   // Subscribe to custom theme changes so editing triggers re-render
   const customThemes = useCustomThemes();
 
@@ -497,6 +523,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
           serialLocalEcho: serialConfig?.localEcho,
           serialLineMode: serialConfig?.lineMode,
           serialLineBufferRef,
+          onOsc52ReadRequest: handleOsc52ReadRequest,
         });
 
         xtermRuntimeRef.current = runtime;
@@ -642,12 +669,34 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     // eslint-disable-next-line react-hooks/exhaustive-deps -- updateStatus is a stable internal helper
   }, [status, auth.needsAuth, host.protocol, host.hostname]);
 
-  const safeFit = () => {
+  const safeFit = (options?: { force?: boolean; requireVisible?: boolean }) => {
     const fitAddon = fitAddonRef.current;
     if (!fitAddon) return;
+    if (options?.requireVisible && !isVisibleRef.current) return;
+
+    const container = containerRef.current;
+    if (!container) return;
+
+    const width = container.clientWidth;
+    const height = container.clientHeight;
+    if (width <= 0 || height <= 0) {
+      // Terminal is hidden — invalidate the cached size so that when it
+      // becomes visible again, a non-forced fit won't be suppressed by a
+      // stale size match (e.g. after font metrics changed while hidden).
+      lastFittedSizeRef.current = null;
+      return;
+    }
+
+    if (!options?.force) {
+      const lastSize = lastFittedSizeRef.current;
+      if (lastSize && lastSize.width === width && lastSize.height === height) {
+        return;
+      }
+    }
 
     const runFit = () => {
       try {
+        lastFittedSizeRef.current = { width, height };
         fitAddon.fit();
       } catch (err) {
         logger.warn("Fit failed", err);
@@ -721,7 +770,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         termRef.current.options.ignoreBracketedPasteMode = terminalSettings.disableBracketedPaste ?? false;
       }
 
-      setTimeout(() => safeFit(), 50);
+      setTimeout(() => safeFit({ force: true }), 50);
     }
   }, [fontSize, effectiveTheme, terminalSettings, host.fontSize]);
 
@@ -739,14 +788,14 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         selectionBackground: effectiveTheme.colors.selection,
       };
 
-      setTimeout(() => safeFit(), 50);
+      setTimeout(() => safeFit({ force: true }), 50);
     }
   }, [host.fontSize, host.fontFamily, host.theme, fontFamilyId, fontSize, effectiveTheme, availableFonts]);
 
   useEffect(() => {
     if (!isVisible) return;
     const timer = setTimeout(() => {
-      safeFit();
+      safeFit({ requireVisible: true });
       if (pendingOutputScrollRef.current) {
         termRef.current?.scrollToBottom();
         if (typeof requestAnimationFrame === "function") {
@@ -828,17 +877,17 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   }, [host.id, host.fontFamily, host.fontSize, fontFamilyId, fontSize, resizeSession, sessionId, terminalSettings]);
 
   useEffect(() => {
-    if (!containerRef.current || !fitAddonRef.current) return;
+    if (!isVisible || !containerRef.current || !fitAddonRef.current) return;
 
     let resizeTimeout: ReturnType<typeof setTimeout> | null = null;
 
     const observer = new ResizeObserver(() => {
-      if (isResizing) return;
+      if (isResizing || !isVisibleRef.current) return;
       if (resizeTimeout) {
         clearTimeout(resizeTimeout);
       }
       resizeTimeout = setTimeout(() => {
-        safeFit();
+        safeFit({ requireVisible: true });
       }, 250);
     });
 
@@ -853,7 +902,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   useEffect(() => {
     if (prevIsResizingRef.current && !isResizing && isVisible) {
       const timer = setTimeout(() => {
-        safeFit();
+        safeFit({ force: true, requireVisible: true });
       }, 100);
       return () => clearTimeout(timer);
     }
@@ -863,7 +912,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   useEffect(() => {
     if (!isVisible || !fitAddonRef.current) return;
     const timer = setTimeout(() => {
-      safeFit();
+      safeFit({ requireVisible: true });
     }, 100);
     return () => clearTimeout(timer);
   }, [inWorkspace, isVisible]);
@@ -903,7 +952,8 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       }
     };
 
-    term.onSelectionChange(onSelectionChange);
+    const disposable = term.onSelectionChange(onSelectionChange);
+    return () => disposable.dispose();
   }, [terminalSettings?.copyOnSelect]);
 
   // Track whether the terminal application has enabled mouse tracking
@@ -965,11 +1015,12 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     let resizeTimeout: ReturnType<typeof setTimeout> | null = null;
 
     const handler = () => {
+      if (!isVisibleRef.current) return;
       if (resizeTimeout) {
         clearTimeout(resizeTimeout);
       }
       resizeTimeout = setTimeout(() => {
-        safeFit();
+        safeFit({ requireVisible: true });
       }, 250);
     };
 
@@ -1001,18 +1052,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     scrollOnPasteRef,
   });
 
-  const handleSnippetClick = (cmd: string) => {
-    if (sessionRef.current) {
-      const payload = `${cmd}\r`;
-      terminalBackend.writeToSession(sessionRef.current, payload);
-      scrollToBottomAfterProgrammaticInput(payload);
-      setIsScriptsOpen(false);
-      termRef.current?.focus();
-      return;
-    }
-    termRef.current?.writeln("\r\n[No active SSH session]");
-  };
-
   const handleSetTerminalEncoding = (encoding: 'utf-8' | 'gb18030') => {
     setTerminalEncoding(encoding);
     if (sessionRef.current) {
@@ -1021,30 +1060,28 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   };
 
   const handleOpenSFTP = async () => {
-    // If SFTP is already open, toggle it off
+    if (onOpenSftp) {
+      // Delegate to parent (TerminalLayer) for shared SFTP side panel
+      let initialPath: string | undefined = undefined;
+      if (sessionRef.current) {
+        try {
+          const result = await terminalBackend.getSessionPwd(sessionRef.current);
+          if (result.success && result.cwd) {
+            initialPath = result.cwd;
+          }
+        } catch {
+          // Silently fail
+        }
+      }
+      onOpenSftp(host, initialPath, undefined, sessionId);
+      return;
+    }
+
+    // Fallback: toggle internal SFTP state (shouldn't happen with new architecture)
     if (showSFTP) {
       setShowSFTP(false);
       return;
     }
-
-    // Try to get the current working directory from the terminal session
-    let initialPath: string | undefined = undefined;
-    if (sessionRef.current) {
-      try {
-        const result = await terminalBackend.getSessionPwd(sessionRef.current);
-        if (result.success && result.cwd) {
-          initialPath = result.cwd;
-        }
-      } catch {
-        // Silently fail and open SFTP without initial path
-      }
-    }
-
-    // Use flushSync to ensure initialPath state is committed before opening SFTP modal
-    // This prevents React's batching from causing the modal to open with stale/undefined initialPath
-    flushSync(() => {
-      setSftpInitialPath(initialPath);
-    });
     setShowSFTP(true);
   };
 
@@ -1176,27 +1213,21 @@ const TerminalComponent: React.FC<TerminalProps> = ({
           termRef.current.focus();
         }
       } else {
-        // Remote terminal: Trigger SFTP upload
-        // Get current working directory for SFTP initial path
-        let initialPath: string | undefined = undefined;
-        if (sessionRef.current) {
-          try {
-            const result = await terminalBackend.getSessionPwd(sessionRef.current);
-            if (result.success && result.cwd) {
-              initialPath = result.cwd;
+        // Remote terminal: Trigger SFTP upload via parent
+        if (onOpenSftp) {
+          let initialPath: string | undefined = undefined;
+          if (sessionRef.current) {
+            try {
+              const result = await terminalBackend.getSessionPwd(sessionRef.current);
+              if (result.success && result.cwd) {
+                initialPath = result.cwd;
+              }
+            } catch {
+              // Silently fail
             }
-          } catch {
-            // Silently fail and open SFTP without initial path
           }
+          onOpenSftp(host, initialPath, dropEntries, sessionId);
         }
-
-        setPendingUploadEntries(dropEntries);
-        // Use flushSync to ensure sftpInitialPath is updated synchronously
-        // before setShowSFTP(true) triggers the modal open
-        flushSync(() => {
-          setSftpInitialPath(initialPath);
-        });
-        setShowSFTP(true);
       }
     } catch (error) {
       logger.error("Failed to handle file drop", error);
@@ -1207,18 +1238,10 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const renderControls = (opts?: { showClose?: boolean }) => (
     <TerminalToolbar
       status={status}
-      snippets={snippets}
       host={host}
-      defaultThemeId={terminalTheme.id}
-      defaultFontFamilyId={fontFamilyId}
-      defaultFontSize={fontSize}
-      onUpdateTerminalThemeId={onUpdateTerminalThemeId}
-      onUpdateTerminalFontFamilyId={onUpdateTerminalFontFamilyId}
-      onUpdateTerminalFontSize={onUpdateTerminalFontSize}
-      isScriptsOpen={isScriptsOpen}
-      setIsScriptsOpen={setIsScriptsOpen}
       onOpenSFTP={handleOpenSFTP}
-      onSnippetClick={handleSnippetClick}
+      onOpenScripts={onOpenScripts ?? (() => {})}
+      onOpenTheme={onOpenTheme ?? (() => {})}
       onUpdateHost={onUpdateHost}
       showClose={opts?.showClose}
       onClose={() => onCloseSession?.(sessionId)}
@@ -1652,7 +1675,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         </div>
 
         <div
-          className="h-full flex-1 min-w-0 transition-all duration-300 relative overflow-hidden pt-8"
+          className="h-full flex-1 min-w-0 relative overflow-hidden pt-8"
           style={{ backgroundColor: effectiveTheme.colors.background }}
         >
           <div
@@ -1677,6 +1700,29 @@ const TerminalComponent: React.FC<TerminalProps> = ({
             </div>
           )}
 
+          {/* OSC-52 clipboard read prompt */}
+          {osc52ReadPromptVisible && (
+            <div
+              className="absolute inset-0 z-40 flex items-center justify-center bg-background/60"
+              onKeyDown={(e) => {
+                if (e.key === 'Escape') handleOsc52ReadResponse(false);
+              }}
+            >
+              <div className="rounded-lg border bg-card p-4 shadow-lg max-w-sm space-y-3">
+                <p className="text-sm font-medium">{t("terminal.osc52.readPrompt.title")}</p>
+                <p className="text-sm text-muted-foreground">{t("terminal.osc52.readPrompt.desc")}</p>
+                <div className="flex justify-end gap-2">
+                  <Button variant="secondary" size="sm" onClick={() => handleOsc52ReadResponse(false)}>
+                    {t("terminal.osc52.readPrompt.deny")}
+                  </Button>
+                  <Button size="sm" autoFocus onClick={() => handleOsc52ReadResponse(true)}>
+                    {t("terminal.osc52.readPrompt.allow")}
+                  </Button>
+                </div>
+              </div>
+            </div>
+          )}
+
           {/* Connection dialog: skip for local/serial during connecting phase, but show on error */}
           {status !== "connected" && !needsHostKeyVerification && !(
             (isLocalConnection || isSerialConnection) && status === "connecting"
@@ -1742,78 +1788,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
             themeColors={effectiveTheme.colors}
           />
         )}
-
-        <SFTPModal
-          host={host}
-          credentials={(() => {
-            const resolvedAuth = resolveHostAuth({ host, keys, identities });
-
-            // Build proxy config if present
-            const proxyConfig = host.proxyConfig
-              ? {
-                type: host.proxyConfig.type,
-                host: host.proxyConfig.host,
-                port: host.proxyConfig.port,
-                username: host.proxyConfig.username,
-                password: host.proxyConfig.password,
-              }
-              : undefined;
-
-            // Build jump hosts array if host chain is configured
-            let jumpHosts: NetcattyJumpHost[] | undefined;
-            if (host.hostChain?.hostIds && host.hostChain.hostIds.length > 0) {
-              jumpHosts = host.hostChain.hostIds
-                .map((hostId) => allHosts.find((h) => h.id === hostId))
-                .filter((h): h is Host => !!h)
-                .map((jumpHost) => {
-                  const jumpAuth = resolveHostAuth({
-                    host: jumpHost,
-                    keys,
-                    identities,
-                  });
-                  const jumpKey = jumpAuth.key;
-                  return {
-                    hostname: jumpHost.hostname,
-                    port: jumpHost.port || 22,
-                    username: jumpAuth.username || "root",
-                    password: jumpAuth.password,
-                    privateKey: jumpKey?.privateKey,
-                    certificate: jumpKey?.certificate,
-                    passphrase: jumpAuth.passphrase || jumpKey?.passphrase,
-                    publicKey: jumpKey?.publicKey,
-                    keyId: jumpAuth.keyId,
-                    keySource: jumpKey?.source,
-                    label: jumpHost.label,
-                  };
-                });
-            }
-
-            return {
-              username: resolvedAuth.username,
-              hostname: host.hostname,
-              port: host.port,
-              password: resolvedAuth.password,
-              privateKey: resolvedAuth.key?.privateKey,
-              certificate: resolvedAuth.key?.certificate,
-              passphrase: resolvedAuth.passphrase,
-              publicKey: resolvedAuth.key?.publicKey,
-              keyId: resolvedAuth.keyId,
-              keySource: resolvedAuth.key?.source,
-              proxy: proxyConfig,
-              jumpHosts: jumpHosts && jumpHosts.length > 0 ? jumpHosts : undefined,
-              sftpSudo: host.sftpSudo,
-              legacyAlgorithms: host.legacyAlgorithms,
-            };
-          })()}
-          open={showSFTP && status === "connected"}
-          onClose={() => {
-            setShowSFTP(false);
-            setPendingUploadEntries([]);
-          }}
-          initialPath={sftpInitialPath}
-          initialEntriesToUpload={pendingUploadEntries}
-          onUpdateHost={onUpdateHost}
-        />
       </div>
     </TerminalContextMenu>
   );

components/TerminalLayer.tsx

@@ -1,4 +1,4 @@
-import { Circle, LayoutGrid, Server } from 'lucide-react';
+import { Circle, FolderTree, LayoutGrid, MessageSquare, PanelLeft, PanelRight, Palette, Server, X, Zap } from 'lucide-react';
 import React, { memo, useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import { useActiveTabId } from '../application/state/activeTabStore';
 import { useTerminalBackend } from '../application/state/useTerminalBackend';
@@ -6,15 +6,25 @@ import { collectSessionIds } from '../domain/workspace';
 import { SplitDirection } from '../domain/workspace';
 import { KeyBinding, TerminalSettings } from '../domain/models';
 import { cn } from '../lib/utils';
+import { useStoredString } from '../application/state/useStoredString';
+import { buildCacheKey } from '../application/state/sftp/sharedRemoteHostCache';
+import type { DropEntry } from '../lib/sftpFileUtils';
 import { Host, Identity, KnownHost, SSHKey, Snippet, TerminalSession, TerminalTheme, Workspace, WorkspaceNode } from '../types';
 import { DistroAvatar } from './DistroAvatar';
 import Terminal from './Terminal';
+import { SftpSidePanel } from './SftpSidePanel';
+import { ScriptsSidePanel } from './ScriptsSidePanel';
+import { ThemeSidePanel } from './terminal/ThemeSidePanel';
+import { AIChatSidePanel } from './AIChatSidePanel';
+import { useAIState } from '../application/state/useAIState';
 import { TerminalComposeBar } from './terminal/TerminalComposeBar';
 import { TERMINAL_THEMES } from '../infrastructure/config/terminalThemes';
 import { useCustomThemes } from '../application/state/customThemeStore';
 import { Button } from './ui/button';
 import { ScrollArea } from './ui/scroll-area';
 
+type SidePanelTab = 'sftp' | 'scripts' | 'theme' | 'ai';
+
 type WorkspaceRect = { x: number; y: number; w: number; h: number };
 
 type SplitHint = {
@@ -33,11 +43,34 @@ type ResizerHandle = {
   splitArea: { w: number; h: number };
 };
 
+type PendingSftpUpload = {
+  requestId: string;
+  hostId: string;
+  /** Full connection identity (id:hostname:port:protocol) for session-override awareness */
+  connectionKey: string;
+  targetPath?: string;
+  entries: DropEntry[];
+};
+
+const filterTabsMap = <T,>(source: Map<string, T>, validIds: Set<string>): Map<string, T> => {
+  let changed = false;
+  const next = new Map<string, T>();
+  for (const [id, value] of source) {
+    if (validIds.has(id)) {
+      next.set(id, value);
+    } else {
+      changed = true;
+    }
+  }
+  return changed ? next : source;
+};
+
 interface TerminalLayerProps {
   hosts: Host[];
   keys: SSHKey[];
   identities: Identity[];
   snippets: Snippet[];
+  snippetPackages: string[];
   sessions: TerminalSession[];
   workspaces: Workspace[];
   knownHosts?: KnownHost[];
@@ -69,6 +102,14 @@ interface TerminalLayerProps {
   // Broadcast mode
   isBroadcastEnabled?: (workspaceId: string) => boolean;
   onToggleBroadcast?: (workspaceId: string) => void;
+  // SFTP side panel
+  updateHosts: (hosts: Host[]) => void;
+  sftpDoubleClickBehavior: 'open' | 'transfer';
+  sftpAutoSync: boolean;
+  sftpShowHiddenFiles: boolean;
+  sftpUseCompressedUpload: boolean;
+  editorWordWrap: boolean;
+  setEditorWordWrap: (value: boolean) => void;
 }
 
 const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
@@ -76,6 +117,7 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
   keys,
   identities,
   snippets,
+  snippetPackages,
   sessions,
   workspaces,
   knownHosts = [],
@@ -106,6 +148,13 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
   onSplitSession,
   isBroadcastEnabled,
   onToggleBroadcast,
+  updateHosts,
+  sftpDoubleClickBehavior,
+  sftpAutoSync,
+  sftpShowHiddenFiles,
+  sftpUseCompressedUpload,
+  editorWordWrap,
+  setEditorWordWrap,
 }) => {
   // Subscribe to activeTabId from external store
   const activeTabId = useActiveTabId();
@@ -184,6 +233,166 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
 
   // Workspace-level compose bar state
   const [isComposeBarOpen, setIsComposeBarOpen] = useState(false);
+  const activeTabIdRef = useRef(activeTabId);
+  activeTabIdRef.current = activeTabId;
+  const activeWorkspaceRef = useRef(activeWorkspace);
+  activeWorkspaceRef.current = activeWorkspace;
+  const onSetWorkspaceFocusedSessionRef = useRef(onSetWorkspaceFocusedSession);
+  onSetWorkspaceFocusedSessionRef.current = onSetWorkspaceFocusedSession;
+
+  // Side panel state - per-tab tracking of which sub-panel is active
+  // Maps tab IDs to the active sub-panel type (sftp/scripts/theme), absent = closed
+  const [sidePanelOpenTabs, setSidePanelOpenTabs] = useState<Map<string, SidePanelTab>>(new Map());
+  const [sidePanelWidth, setSidePanelWidth] = useState(() => {
+    const stored = window.localStorage.getItem('netcatty_side_panel_width');
+    return stored ? Math.max(280, Math.min(800, Number(stored))) : 420;
+  });
+  const [sidePanelPosition, setSidePanelPosition] = useStoredString<'left' | 'right'>(
+    'netcatty_side_panel_position',
+    'left',
+    (v): v is 'left' | 'right' => v === 'left' || v === 'right',
+  );
+  const sftpResizingRef = useRef(false);
+  const sidePanelOpenTabsRef = useRef(sidePanelOpenTabs);
+  sidePanelOpenTabsRef.current = sidePanelOpenTabs;
+
+  // Whether side panel is open for the currently active tab and which sub-panel
+  const isSidePanelOpenForCurrentTab = activeTabId ? sidePanelOpenTabs.has(activeTabId) : false;
+  const activeSidePanelTab = activeTabId ? sidePanelOpenTabs.get(activeTabId) ?? null : null;
+
+  // Legacy compatibility helpers for SFTP-specific logic
+  const isSftpOpenForCurrentTab = activeSidePanelTab === 'sftp';
+
+  // The host to pass to the SFTP panel - stored when the user opens SFTP
+  const [sftpHostForTab, setSftpHostForTab] = useState<Map<string, Host>>(new Map());
+  const [sftpInitialLocationForTab, setSftpInitialLocationForTab] = useState<
+    Map<string, { hostId: string; path: string }>
+  >(new Map());
+  const [sftpPendingUploadsForTab, setSftpPendingUploadsForTab] = useState<
+    Map<string, PendingSftpUpload>
+  >(new Map());
+  const sftpHostForTabRef = useRef(sftpHostForTab);
+  sftpHostForTabRef.current = sftpHostForTab;
+
+  const handleToggleWorkspaceComposeBar = useCallback(() => {
+    setIsComposeBarOpen(prev => !prev);
+  }, []);
+
+  const handleOpenSftp = useCallback((host: Host, initialPath?: string, pendingUploadEntries?: DropEntry[], sourceSessionId?: string) => {
+    const tabId = activeTabIdRef.current;
+    if (!tabId) return;
+
+    // When SFTP is opened from a non-focused workspace pane (toolbar click
+    // or drag-drop), switch focus first so the SFTP panel binds to the
+    // correct host.
+    if (sourceSessionId) {
+      const ws = activeWorkspaceRef.current;
+      if (ws && ws.focusedSessionId !== sourceSessionId) {
+        onSetWorkspaceFocusedSessionRef.current?.(ws.id, sourceSessionId);
+      }
+    }
+
+    const currentPanel = sidePanelOpenTabsRef.current.get(tabId);
+    const isOpen = currentPanel === 'sftp';
+    const currentHost = sftpHostForTabRef.current.get(tabId);
+    const shouldKeepOpen = !!pendingUploadEntries?.length;
+    // Compare full endpoint identity so that session-time overrides
+    // (different port/protocol for the same host ID) trigger a switch
+    // instead of toggling the panel closed.
+    const isSameEndpoint = currentHost
+      && currentHost.id === host.id
+      && currentHost.hostname === host.hostname
+      && currentHost.port === host.port
+      && currentHost.protocol === host.protocol
+      && currentHost.username === host.username
+      && currentHost.sftpSudo === host.sftpSudo;
+
+    const isClosing = !shouldKeepOpen && isOpen && isSameEndpoint;
+
+    setSidePanelOpenTabs(prev => {
+      const next = new Map(prev);
+      if (isClosing) {
+        next.delete(tabId);
+      } else {
+        next.set(tabId, 'sftp');
+      }
+      return next;
+    });
+
+    // Store or remove the host for this tab.
+    // Removing on close unmounts the panel so SFTP sessions are cleaned up.
+    setSftpHostForTab(prev => {
+      const next = new Map(prev);
+      if (isClosing) {
+        next.delete(tabId);
+      } else {
+        next.set(tabId, host);
+      }
+      return next;
+    });
+
+    setSftpInitialLocationForTab(prev => {
+      const next = new Map(prev);
+      if (initialPath) {
+        next.set(tabId, { hostId: host.id, path: initialPath });
+      } else {
+        next.delete(tabId);
+      }
+      return next;
+    });
+
+    setSftpPendingUploadsForTab(prev => {
+      const next = new Map(prev);
+      if (isClosing || !pendingUploadEntries?.length) {
+        // Clear any stale pending upload on close or when opening without new files
+        next.delete(tabId);
+      } else {
+        next.set(tabId, {
+          requestId: crypto.randomUUID(),
+          hostId: host.id,
+          connectionKey: buildCacheKey(host.id, host.hostname, host.port, host.protocol, host.sftpSudo, host.username),
+          targetPath: initialPath,
+          entries: pendingUploadEntries,
+        });
+      }
+      return next;
+    });
+  }, []);
+
+  const handlePendingUploadHandled = useCallback((tabId: string, requestId: string) => {
+    setSftpPendingUploadsForTab(prev => {
+      const current = prev.get(tabId);
+      if (!current || current.requestId !== requestId) {
+        return prev;
+      }
+      const next = new Map(prev);
+      next.delete(tabId);
+      return next;
+    });
+  }, []);
+
+  // Side panel resize handler
+  const handleSidePanelResizeStart = useCallback((e: React.MouseEvent) => {
+    e.preventDefault();
+    sftpResizingRef.current = true;
+    const startX = e.clientX;
+    const startWidth = sidePanelWidth;
+
+    let lastWidth = startWidth;
+    const onMouseMove = (ev: MouseEvent) => {
+      const delta = ev.clientX - startX;
+      lastWidth = Math.max(280, Math.min(800, startWidth + (sidePanelPosition === 'left' ? delta : -delta)));
+      setSidePanelWidth(lastWidth);
+    };
+    const onMouseUp = () => {
+      sftpResizingRef.current = false;
+      window.localStorage.setItem('netcatty_side_panel_width', String(lastWidth));
+      window.removeEventListener('mousemove', onMouseMove);
+      window.removeEventListener('mouseup', onMouseUp);
+    };
+    window.addEventListener('mousemove', onMouseMove);
+    window.addEventListener('mouseup', onMouseUp);
+  }, [sidePanelWidth, sidePanelPosition]);
 
   // Pre-compute host lookup map for O(1) access
   const hostMap = useMemo(() => {
@@ -226,6 +435,89 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
     return map;
   }, [sessions, hostMap]);
 
+  const validTerminalTabIds = useMemo(() => {
+    const ids = new Set<string>();
+    for (const session of sessions) ids.add(session.id);
+    for (const workspace of workspaces) ids.add(workspace.id);
+    return ids;
+  }, [sessions, workspaces]);
+
+  const onSplitSessionRef = useRef(onSplitSession);
+  onSplitSessionRef.current = onSplitSession;
+  const splitHorizontalHandlersRef = useRef<Map<string, () => void>>(new Map());
+  const splitVerticalHandlersRef = useRef<Map<string, () => void>>(new Map());
+
+  useEffect(() => {
+    const validSessionIds = new Set(sessions.map((session) => session.id));
+
+    for (const [id] of splitHorizontalHandlersRef.current) {
+      if (!validSessionIds.has(id)) {
+        splitHorizontalHandlersRef.current.delete(id);
+      }
+    }
+    for (const [id] of splitVerticalHandlersRef.current) {
+      if (!validSessionIds.has(id)) {
+        splitVerticalHandlersRef.current.delete(id);
+      }
+    }
+
+    for (const session of sessions) {
+      if (!splitHorizontalHandlersRef.current.has(session.id)) {
+        splitHorizontalHandlersRef.current.set(session.id, () => {
+          onSplitSessionRef.current?.(session.id, 'horizontal');
+        });
+      }
+      if (!splitVerticalHandlersRef.current.has(session.id)) {
+        splitVerticalHandlersRef.current.set(session.id, () => {
+          onSplitSessionRef.current?.(session.id, 'vertical');
+        });
+      }
+    }
+  }, [sessions]);
+
+  const onToggleWorkspaceViewModeRef = useRef(onToggleWorkspaceViewMode);
+  onToggleWorkspaceViewModeRef.current = onToggleWorkspaceViewMode;
+  const workspaceFocusHandlersRef = useRef<Map<string, () => void>>(new Map());
+
+  const onToggleBroadcastRef = useRef(onToggleBroadcast);
+  onToggleBroadcastRef.current = onToggleBroadcast;
+  const workspaceBroadcastHandlersRef = useRef<Map<string, () => void>>(new Map());
+
+  useEffect(() => {
+    const validWorkspaceIds = new Set(workspaces.map((workspace) => workspace.id));
+
+    for (const [id] of workspaceFocusHandlersRef.current) {
+      if (!validWorkspaceIds.has(id)) {
+        workspaceFocusHandlersRef.current.delete(id);
+      }
+    }
+    for (const [id] of workspaceBroadcastHandlersRef.current) {
+      if (!validWorkspaceIds.has(id)) {
+        workspaceBroadcastHandlersRef.current.delete(id);
+      }
+    }
+
+    for (const workspace of workspaces) {
+      if (!workspaceFocusHandlersRef.current.has(workspace.id)) {
+        workspaceFocusHandlersRef.current.set(workspace.id, () => {
+          onToggleWorkspaceViewModeRef.current?.(workspace.id);
+        });
+      }
+      if (!workspaceBroadcastHandlersRef.current.has(workspace.id)) {
+        workspaceBroadcastHandlersRef.current.set(workspace.id, () => {
+          onToggleBroadcastRef.current?.(workspace.id);
+        });
+      }
+    }
+  }, [workspaces]);
+
+  useEffect(() => {
+    setSidePanelOpenTabs(prev => filterTabsMap(prev, validTerminalTabIds));
+    setSftpHostForTab(prev => filterTabsMap(prev, validTerminalTabIds));
+    setSftpInitialLocationForTab(prev => filterTabsMap(prev, validTerminalTabIds));
+    setSftpPendingUploadsForTab(prev => filterTabsMap(prev, validTerminalTabIds));
+  }, [validTerminalTabIds]);
+
   const computeWorkspaceRects = useCallback((workspace?: Workspace, size?: { width: number; height: number }): Record<string, WorkspaceRect> => {
     if (!workspace) return {} as Record<string, WorkspaceRect>;
     const wTotal = size?.width || 1;
@@ -435,6 +727,245 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
   const isFocusMode = activeWorkspace?.viewMode === 'focus';
   const focusedSessionId = activeWorkspace?.focusedSessionId;
 
+  // Resolve the SFTP host for the current tab.
+  // Uses the stored host from when the user opened SFTP, but updates when
+  // the focused session changes in workspace mode.
+  const sftpActiveHost = useMemo((): Host | null => {
+    if (!isSftpOpenForCurrentTab || !activeTabId) return null;
+    // For workspace: follow focus
+    if (activeWorkspace && focusedSessionId) {
+      return sessionHostsMap.get(focusedSessionId) ?? sftpHostForTab.get(activeTabId) ?? null;
+    }
+    // For solo session: use stored host (from when SFTP was opened)
+    return sftpHostForTab.get(activeTabId) ?? null;
+  }, [isSftpOpenForCurrentTab, activeTabId, activeWorkspace, focusedSessionId, sessionHostsMap, sftpHostForTab]);
+
+  // Keep sftpHostForTab in sync with focus changes in workspace mode
+  // so that the toggle check uses the currently displayed host.
+  useEffect(() => {
+    if (!activeTabId || !sftpActiveHost) return;
+    if (sidePanelOpenTabs.get(activeTabId) !== 'sftp') return;
+    const stored = sftpHostForTab.get(activeTabId);
+    if (stored?.id === sftpActiveHost.id
+      && stored?.hostname === sftpActiveHost.hostname
+      && stored?.port === sftpActiveHost.port
+      && stored?.protocol === sftpActiveHost.protocol) return;
+    setSftpHostForTab(prev => {
+      const next = new Map(prev);
+      next.set(activeTabId, sftpActiveHost);
+      return next;
+    });
+  }, [activeTabId, sftpActiveHost, sidePanelOpenTabs, sftpHostForTab]);
+
+  const mountedSftpTabIds = useMemo(
+    () => Array.from(sftpHostForTab.keys()),
+    [sftpHostForTab],
+  );
+
+  // Get the focused terminal's current working directory
+  const getTerminalCwd = useCallback(async (): Promise<string | null> => {
+    const sessionId = activeWorkspace?.focusedSessionId ?? activeSession?.id;
+    if (!sessionId) return null;
+    try {
+      const result = await terminalBackend.getSessionPwd(sessionId);
+      return result.success && result.cwd ? result.cwd : null;
+    } catch {
+      return null;
+    }
+  }, [activeWorkspace?.focusedSessionId, activeSession?.id, terminalBackend]);
+
+  // Close the entire side panel for the current tab
+  const handleCloseSidePanel = useCallback(() => {
+    if (!activeTabId) return;
+    setSidePanelOpenTabs(prev => {
+      const next = new Map(prev);
+      next.delete(activeTabId);
+      return next;
+    });
+    // Always clean up SFTP state (it may be mounted in the background
+    // while scripts/theme tab was active)
+    setSftpHostForTab(prev => {
+      const next = new Map(prev);
+      next.delete(activeTabId);
+      return next;
+    });
+    setSftpPendingUploadsForTab(prev => {
+      const next = new Map(prev);
+      next.delete(activeTabId);
+      return next;
+    });
+    setSftpInitialLocationForTab(prev => {
+      const next = new Map(prev);
+      next.delete(activeTabId);
+      return next;
+    });
+  }, [activeTabId]);
+
+  // Switch side panel to a specific tab (or toggle if already on that tab)
+  const handleSwitchSidePanelTab = useCallback((tab: SidePanelTab) => {
+    if (!activeTabId) return;
+    const currentPanel = sidePanelOpenTabsRef.current.get(activeTabId);
+
+    // If already on this tab, do nothing — user must click X to close
+    if (currentPanel === tab) return;
+
+    // If switching to SFTP and no host is stored yet, resolve it
+    if (tab === 'sftp' && !sftpHostForTabRef.current.has(activeTabId)) {
+      let host: Host | null = null;
+      if (activeWorkspace && focusedSessionId) {
+        host = sessionHostsMap.get(focusedSessionId) ?? null;
+      } else if (activeSession) {
+        host = sessionHostsMap.get(activeSession.id) ?? null;
+      }
+      if (!host) return;
+      setSftpHostForTab(prev => {
+        const next = new Map(prev);
+        next.set(activeTabId, host);
+        return next;
+      });
+    }
+
+    // Note: When switching away from SFTP, we keep the SFTP host state
+    // so the SftpSidePanel stays mounted (hidden) and preserves connections.
+    // SFTP state is only cleaned up when the panel is fully closed.
+
+    setSidePanelOpenTabs(prev => {
+      const next = new Map(prev);
+      next.set(activeTabId, tab);
+      return next;
+    });
+  }, [activeTabId, activeWorkspace, focusedSessionId, activeSession, sessionHostsMap]);
+
+  // Toggle SFTP from activity bar header
+  const handleToggleSftpFromBar = useCallback(() => {
+    handleSwitchSidePanelTab('sftp');
+  }, [handleSwitchSidePanelTab]);
+
+  // Open scripts side panel (called from Terminal toolbar)
+  const handleOpenScripts = useCallback(() => {
+    handleSwitchSidePanelTab('scripts');
+  }, [handleSwitchSidePanelTab]);
+
+  // Open theme side panel (called from Terminal toolbar)
+  const handleOpenTheme = useCallback(() => {
+    handleSwitchSidePanelTab('theme');
+  }, [handleSwitchSidePanelTab]);
+
+  // Open AI chat side panel
+  const handleOpenAI = useCallback(() => {
+    handleSwitchSidePanelTab('ai');
+  }, [handleSwitchSidePanelTab]);
+
+  // Listen for global AI panel toggle (from TopTabs button)
+  useEffect(() => {
+    const handler = () => handleOpenAI();
+    window.addEventListener('netcatty:toggle-ai-panel', handler);
+    return () => window.removeEventListener('netcatty:toggle-ai-panel', handler);
+  }, [handleOpenAI]);
+
+  // Execute snippet on the focused terminal session
+  const handleSnippetClickForFocusedSession = useCallback((command: string) => {
+    const sessionId = activeWorkspace?.focusedSessionId ?? activeSession?.id;
+    if (!sessionId) return;
+    const payload = `${command}\r`;
+    terminalBackend.writeToSession(sessionId, payload);
+    // Re-focus the terminal so the user can interact immediately
+    const pane = document.querySelector(`[data-session-id="${sessionId}"]`);
+    const textarea = pane?.querySelector('textarea.xterm-helper-textarea') as HTMLTextAreaElement | null;
+    textarea?.focus();
+  }, [activeWorkspace?.focusedSessionId, activeSession?.id, terminalBackend]);
+
+  // Resolve theme change handler for the focused session
+  const focusedHost = useMemo((): Host | null => {
+    if (activeWorkspace && focusedSessionId) {
+      return sessionHostsMap.get(focusedSessionId) ?? null;
+    }
+    if (activeSession) {
+      return sessionHostsMap.get(activeSession.id) ?? null;
+    }
+    return null;
+  }, [activeWorkspace, focusedSessionId, activeSession, sessionHostsMap]);
+
+  const isFocusedHostLocal = useMemo(() => {
+    return focusedHost?.protocol === 'local' || !!focusedHost?.id?.startsWith('local-');
+  }, [focusedHost]);
+
+  const handleThemeChangeForFocusedSession = useCallback((themeId: string) => {
+    if (isFocusedHostLocal) {
+      onUpdateTerminalThemeId?.(themeId);
+      return;
+    }
+    if (focusedHost) {
+      onUpdateHost({ ...focusedHost, theme: themeId });
+    }
+  }, [focusedHost, isFocusedHostLocal, onUpdateTerminalThemeId, onUpdateHost]);
+
+  const handleFontFamilyChangeForFocusedSession = useCallback((fontFamilyId: string) => {
+    if (isFocusedHostLocal) {
+      onUpdateTerminalFontFamilyId?.(fontFamilyId);
+      return;
+    }
+    if (focusedHost) {
+      onUpdateHost({ ...focusedHost, fontFamily: fontFamilyId });
+    }
+  }, [focusedHost, isFocusedHostLocal, onUpdateTerminalFontFamilyId, onUpdateHost]);
+
+  const handleFontSizeChangeForFocusedSession = useCallback((newFontSize: number) => {
+    if (isFocusedHostLocal) {
+      onUpdateTerminalFontSize?.(newFontSize);
+      return;
+    }
+    if (focusedHost) {
+      onUpdateHost({ ...focusedHost, fontSize: newFontSize });
+    }
+  }, [focusedHost, isFocusedHostLocal, onUpdateTerminalFontSize, onUpdateHost]);
+
+  // Current theme/font/size for the focused session (for ThemeSidePanel)
+  const focusedThemeId = focusedHost?.theme ?? terminalTheme.id;
+  const focusedFontFamilyId = focusedHost?.fontFamily ?? terminalFontFamilyId;
+  const focusedFontSize = focusedHost?.fontSize ?? fontSize;
+
+  // AI Chat state
+  const aiState = useAIState();
+  const { cleanupOrphanedSessions } = aiState;
+
+  // On mount: clean up orphaned AI sessions after a short delay
+  // (allows sessions/workspaces to fully initialize)
+  const hasCleanedUpRef = useRef(false);
+  useEffect(() => {
+    if (hasCleanedUpRef.current) return;
+    // Guard: wait until both sessions AND workspaces have loaded to avoid
+    // racing with partial state (e.g. sessions loaded but workspaces not yet).
+    if (sessions.length === 0 || workspaces.length === 0) return;
+    hasCleanedUpRef.current = true;
+    const activeIds = new Set<string>();
+    for (const s of sessions) activeIds.add(s.id);
+    for (const w of workspaces) activeIds.add(w.id);
+    cleanupOrphanedSessions(activeIds);
+  }, [sessions, workspaces, cleanupOrphanedSessions]);
+
+  // Build terminal session context for the AI chat panel
+  const aiTerminalSessions = useMemo(() => {
+    const sessionIds = activeWorkspace?.root
+      ? collectSessionIds(activeWorkspace.root)
+      : activeSession ? [activeSession.id] : [];
+
+    const result = sessionIds.map(sid => {
+      const s = sessions.find(s => s.id === sid);
+      const host = s?.hostId ? hosts.find(h => h.id === s.hostId) : undefined;
+      return {
+        sessionId: sid,
+        hostId: s?.hostId || '',
+        hostname: host?.hostname || '',
+        label: host?.label || s?.hostLabel || '',
+        os: host?.os,
+        username: host?.username,
+        connected: s?.status === 'connected',
+      };
+    });
+    return result;
+  }, [sessions, hosts, activeWorkspace, activeSession]);
+
   // Subscribe to custom theme changes so editing triggers re-render
   const customThemes = useCustomThemes();
 
@@ -620,48 +1151,264 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
       className="absolute inset-0 bg-background flex flex-col"
       style={{ display: isTerminalLayerVisible ? 'flex' : 'none', zIndex: isTerminalLayerVisible ? 10 : 0 }}
     >
-      <div className="flex-1 flex min-h-0 relative">
+      <div className={cn("flex-1 flex min-h-0 relative", sidePanelPosition === 'right' && "flex-row-reverse")}>
+        {/* Side panel with tab header + content (SFTP / Scripts / Theme) */}
+        {(isSidePanelOpenForCurrentTab || mountedSftpTabIds.length > 0) && (
+          <>
+            <div
+              style={{ width: isSidePanelOpenForCurrentTab ? sidePanelWidth : 0 }}
+              className={cn(
+                "flex-shrink-0 h-full relative z-20",
+              )}
+            >
+              {isSidePanelOpenForCurrentTab && (
+                <div
+                  className={cn(
+                    "absolute top-0 h-full w-2 cursor-ew-resize z-30",
+                    sidePanelPosition === 'left' ? "right-[-3px]" : "left-[-3px]",
+                  )}
+                  onMouseDown={handleSidePanelResizeStart}
+                />
+              )}
+              <div
+                className={cn(
+                  "h-full flex flex-col overflow-hidden",
+                  !isSidePanelOpenForCurrentTab && "pointer-events-none",
+                )}
+              >
+                {isSidePanelOpenForCurrentTab && (
+                  <div className="flex h-9 items-center px-1.5 py-1 flex-shrink-0 gap-1">
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className={cn(
+                        "h-7 w-7 rounded-md p-0",
+                        activeSidePanelTab === 'sftp'
+                          ? "text-foreground opacity-100"
+                          : "text-muted-foreground opacity-70 hover:opacity-100",
+                        "hover:bg-transparent",
+                      )}
+                      onClick={handleToggleSftpFromBar}
+                      title="SFTP"
+                    >
+                      <FolderTree size={15} />
+                    </Button>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className={cn(
+                        "h-7 w-7 rounded-md p-0",
+                        activeSidePanelTab === 'scripts'
+                          ? "text-foreground opacity-100"
+                          : "text-muted-foreground opacity-70 hover:opacity-100",
+                        "hover:bg-transparent",
+                      )}
+                      onClick={handleOpenScripts}
+                      title="Scripts"
+                    >
+                      <Zap size={15} />
+                    </Button>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className={cn(
+                        "h-7 w-7 rounded-md p-0",
+                        activeSidePanelTab === 'theme'
+                          ? "text-foreground opacity-100"
+                          : "text-muted-foreground opacity-70 hover:opacity-100",
+                        "hover:bg-transparent",
+                      )}
+                      onClick={handleOpenTheme}
+                      title="Theme"
+                    >
+                      <Palette size={15} />
+                    </Button>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className={cn(
+                        "h-7 w-7 rounded-md p-0",
+                        activeSidePanelTab === 'ai'
+                          ? "text-foreground opacity-100"
+                          : "text-muted-foreground opacity-70 hover:opacity-100",
+                        "hover:bg-transparent",
+                      )}
+                      onClick={handleOpenAI}
+                      title="AI Chat"
+                    >
+                      <MessageSquare size={15} />
+                    </Button>
+                    <div className="flex-1" />
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className={cn(
+                        "h-7 w-7 rounded-md p-0 text-muted-foreground",
+                        "hover:bg-transparent hover:text-foreground",
+                      )}
+                      onClick={() => setSidePanelPosition(p => p === 'left' ? 'right' : 'left')}
+                      title={sidePanelPosition === 'left' ? 'Move panel to right' : 'Move panel to left'}
+                    >
+                      {sidePanelPosition === 'left' ? <PanelRight size={15} /> : <PanelLeft size={15} />}
+                    </Button>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className={cn(
+                        "h-7 w-7 rounded-md p-0 text-muted-foreground",
+                        "hover:bg-transparent hover:text-foreground",
+                      )}
+                      onClick={handleCloseSidePanel}
+                      title="Close panel"
+                    >
+                      <X size={15} />
+                    </Button>
+                  </div>
+                )}
+                <div className="flex-1 min-h-0 relative">
+                  {/* SFTP sub-panel */}
+                  {mountedSftpTabIds.map((tabId) => {
+                    const isVisibleSftpPanel = activeTabId === tabId && activeSidePanelTab === 'sftp';
+                    return (
+                        <SftpSidePanel
+                          key={tabId}
+                          hosts={hosts}
+                          keys={keys}
+                          identities={identities}
+                          updateHosts={updateHosts}
+                          activeHost={isVisibleSftpPanel ? sftpActiveHost : null}
+                          initialLocation={
+                            isVisibleSftpPanel
+                              ? (sftpInitialLocationForTab.get(tabId) ?? null)
+                              : null
+                          }
+                          showWorkspaceHostHeader={isVisibleSftpPanel && !!activeWorkspace}
+                          isVisible={isVisibleSftpPanel}
+                          renderOverlays={isVisibleSftpPanel}
+                          pendingUpload={sftpPendingUploadsForTab.get(tabId) ?? null}
+                          onPendingUploadHandled={(requestId) => handlePendingUploadHandled(tabId, requestId)}
+                          sftpDoubleClickBehavior={sftpDoubleClickBehavior}
+                          sftpAutoSync={isVisibleSftpPanel ? sftpAutoSync : false}
+                          sftpShowHiddenFiles={sftpShowHiddenFiles}
+                          sftpUseCompressedUpload={sftpUseCompressedUpload}
+                          editorWordWrap={editorWordWrap}
+                          setEditorWordWrap={setEditorWordWrap}
+                          onGetTerminalCwd={getTerminalCwd}
+                        />
+                    );
+                  })}
+
+                  {/* Scripts sub-panel */}
+                  {activeSidePanelTab === 'scripts' && (
+                    <div className="absolute inset-0 z-10">
+                      <ScriptsSidePanel
+                        snippets={snippets}
+                        packages={snippetPackages}
+                        onSnippetClick={handleSnippetClickForFocusedSession}
+                      />
+                    </div>
+                  )}
+
+                  {/* Theme sub-panel */}
+                  {activeSidePanelTab === 'theme' && (
+                    <div className="absolute inset-0 z-10">
+                      <ThemeSidePanel
+                        currentThemeId={focusedThemeId}
+                        currentFontFamilyId={focusedFontFamilyId}
+                        currentFontSize={focusedFontSize}
+                        onThemeChange={handleThemeChangeForFocusedSession}
+                        onFontFamilyChange={handleFontFamilyChangeForFocusedSession}
+                        onFontSizeChange={handleFontSizeChangeForFocusedSession}
+                      />
+                    </div>
+                  )}
+
+                  {/* AI Chat sub-panel */}
+                  {activeSidePanelTab === 'ai' && (
+                    <div className="absolute inset-0 z-10">
+                      <AIChatSidePanel
+                        sessions={aiState.sessions}
+                        activeSessionIdMap={aiState.activeSessionIdMap}
+                        setActiveSessionId={aiState.setActiveSessionId}
+                        createSession={aiState.createSession}
+                        deleteSession={aiState.deleteSession}
+                        updateSessionTitle={aiState.updateSessionTitle}
+                        addMessageToSession={aiState.addMessageToSession}
+                        updateLastMessage={aiState.updateLastMessage}
+                        updateMessageById={aiState.updateMessageById}
+                        providers={aiState.providers}
+                        activeProviderId={aiState.activeProviderId}
+                        activeModelId={aiState.activeModelId}
+                        defaultAgentId={aiState.defaultAgentId}
+                        externalAgents={aiState.externalAgents}
+                        setExternalAgents={aiState.setExternalAgents}
+                        agentModelMap={aiState.agentModelMap}
+                        setAgentModel={aiState.setAgentModel}
+                        globalPermissionMode={aiState.globalPermissionMode}
+                        setGlobalPermissionMode={aiState.setGlobalPermissionMode}
+                        commandBlocklist={aiState.commandBlocklist}
+                        maxIterations={aiState.maxIterations}
+                        scopeType={activeWorkspace ? 'workspace' : 'terminal'}
+                        scopeTargetId={activeWorkspace?.id ?? activeSession?.id}
+                        scopeHostIds={activeWorkspace?.root
+                          ? collectSessionIds(activeWorkspace.root).map(sid => {
+                              const s = sessions.find(s => s.id === sid);
+                              return s?.hostId;
+                            }).filter((id): id is string => !!id)
+                          : activeSession?.hostId ? [activeSession.hostId] : []
+                        }
+                        scopeLabel={activeWorkspace?.name ?? activeSession?.label ?? ''}
+                        terminalSessions={aiTerminalSessions}
+                      />
+                    </div>
+                  )}
+                </div>
+              </div>
+            </div>
+          </>
+        )}
+
         {/* Focus mode sidebar */}
         {isFocusMode && renderFocusModeSidebar()}
 
-        {draggingSessionId && !isFocusMode && (
-          <div
-            ref={workspaceOverlayRef}
-            className="absolute inset-0 z-30"
-            onDragOver={(e) => {
-              if (isFocusMode) return;
-              if (!e.dataTransfer.types.includes('session-id')) return;
-              e.preventDefault();
-              e.stopPropagation();
-              const hint = computeSplitHint(e);
-              setDropHint(hint);
-            }}
-            onDragLeave={(e) => {
-              if (!e.dataTransfer.types.includes('session-id')) return;
-              setDropHint(null);
-            }}
-            onDrop={(e) => {
-              e.preventDefault();
-              e.stopPropagation();
-              handleWorkspaceDrop(e);
-            }}
-          >
-            {dropHint && (
-              <div className="absolute inset-0 pointer-events-none">
-                <div
-                  className="absolute bg-emerald-600/35 border border-emerald-400/70 backdrop-blur-sm transition-all duration-150"
-                  style={{
-                    width: dropHint.rect ? `${dropHint.rect.w}px` : dropHint.direction === 'vertical' ? '50%' : '100%',
-                    height: dropHint.rect ? `${dropHint.rect.h}px` : dropHint.direction === 'vertical' ? '100%' : '50%',
-                    left: dropHint.rect ? `${dropHint.rect.x}px` : dropHint.direction === 'vertical' ? (dropHint.position === 'left' ? 0 : '50%') : 0,
-                    top: dropHint.rect ? `${dropHint.rect.y}px` : dropHint.direction === 'vertical' ? 0 : (dropHint.position === 'top' ? 0 : '50%'),
-                  }}
-                />
-              </div>
-            )}
-          </div>
-        )}
-        <div ref={workspaceInnerRef} className={cn("absolute overflow-hidden", isFocusMode ? "left-56 right-0 top-0 bottom-0" : "inset-0")}>
+        <div ref={workspaceInnerRef} className="overflow-hidden relative flex-1">
+          {draggingSessionId && !isFocusMode && (
+            <div
+              ref={workspaceOverlayRef}
+              className="absolute inset-0 z-30"
+              onDragOver={(e) => {
+                if (isFocusMode) return;
+                if (!e.dataTransfer.types.includes('session-id')) return;
+                e.preventDefault();
+                e.stopPropagation();
+                const hint = computeSplitHint(e);
+                setDropHint(hint);
+              }}
+              onDragLeave={(e) => {
+                if (!e.dataTransfer.types.includes('session-id')) return;
+                setDropHint(null);
+              }}
+              onDrop={(e) => {
+                e.preventDefault();
+                e.stopPropagation();
+                handleWorkspaceDrop(e);
+              }}
+            >
+              {dropHint && (
+                <div className="absolute inset-0 pointer-events-none">
+                  <div
+                    className="absolute bg-emerald-600/35 border border-emerald-400/70 backdrop-blur-sm transition-all duration-150"
+                    style={{
+                      width: dropHint.rect ? `${dropHint.rect.w}px` : dropHint.direction === 'vertical' ? '50%' : '100%',
+                      height: dropHint.rect ? `${dropHint.rect.h}px` : dropHint.direction === 'vertical' ? '100%' : '50%',
+                      left: dropHint.rect ? `${dropHint.rect.x}px` : dropHint.direction === 'vertical' ? (dropHint.position === 'left' ? 0 : '50%') : 0,
+                      top: dropHint.rect ? `${dropHint.rect.y}px` : dropHint.direction === 'vertical' ? 0 : (dropHint.position === 'top' ? 0 : '50%'),
+                    }}
+                  />
+                </div>
+              )}
+            </div>
+          )}
           {sessions.map(session => {
             // Use pre-computed host to avoid creating new objects on every render
             const host = sessionHostsMap.get(session.id)!;
@@ -694,6 +1441,14 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
 
             // Check if this pane is the focused one in the workspace
             const isFocusedPane = inActiveWorkspace && !isFocusMode && session.id === focusedSessionId;
+            const workspaceFocusHandler = activeWorkspace
+              ? workspaceFocusHandlersRef.current.get(activeWorkspace.id)
+              : undefined;
+            const workspaceBroadcastHandler = activeWorkspace
+              ? workspaceBroadcastHandlersRef.current.get(activeWorkspace.id)
+              : undefined;
+            const splitHorizontalHandler = splitHorizontalHandlersRef.current.get(session.id);
+            const splitVerticalHandler = splitVerticalHandlersRef.current.get(session.id);
 
             return (
               <div
@@ -733,12 +1488,12 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
                   sessionId={session.id}
                   startupCommand={session.startupCommand}
                   serialConfig={session.serialConfig}
-                  onUpdateTerminalThemeId={onUpdateTerminalThemeId}
-                  onUpdateTerminalFontFamilyId={onUpdateTerminalFontFamilyId}
-                  onUpdateTerminalFontSize={onUpdateTerminalFontSize}
                   hotkeyScheme={hotkeyScheme}
                   keyBindings={keyBindings}
                   onHotkeyAction={onHotkeyAction}
+                  onOpenSftp={handleOpenSftp}
+                  onOpenScripts={handleOpenScripts}
+                  onOpenTheme={handleOpenTheme}
                   onCloseSession={handleCloseSession}
                   onStatusChange={handleStatusChange}
                   onSessionExit={handleSessionExit}
@@ -747,12 +1502,12 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
                   onUpdateHost={handleUpdateHost}
                   onAddKnownHost={handleAddKnownHost}
                   onCommandExecuted={handleCommandExecuted}
-                  onExpandToFocus={inActiveWorkspace && !isFocusMode && activeWorkspace ? () => onToggleWorkspaceViewMode?.(activeWorkspace.id) : undefined}
-                  onSplitHorizontal={onSplitSession ? () => onSplitSession(session.id, 'horizontal') : undefined}
-                  onSplitVertical={onSplitSession ? () => onSplitSession(session.id, 'vertical') : undefined}
+                  onExpandToFocus={inActiveWorkspace && !isFocusMode ? workspaceFocusHandler : undefined}
+                  onSplitHorizontal={onSplitSession ? splitHorizontalHandler : undefined}
+                  onSplitVertical={onSplitSession ? splitVerticalHandler : undefined}
                   isBroadcastEnabled={inActiveWorkspace && activeWorkspace ? isBroadcastEnabled?.(activeWorkspace.id) : false}
-                  onToggleBroadcast={inActiveWorkspace && activeWorkspace ? () => onToggleBroadcast?.(activeWorkspace.id) : undefined}
-                  onToggleComposeBar={inActiveWorkspace ? () => setIsComposeBarOpen(prev => !prev) : undefined}
+                  onToggleBroadcast={inActiveWorkspace ? workspaceBroadcastHandler : undefined}
+                  onToggleComposeBar={inActiveWorkspace ? handleToggleWorkspaceComposeBar : undefined}
                   isWorkspaceComposeBarOpen={inActiveWorkspace ? isComposeBarOpen : undefined}
                   onBroadcastInput={inActiveWorkspace && activeWorkspace && isBroadcastEnabled?.(activeWorkspace.id) ? handleBroadcastInput : undefined}
                 />
@@ -843,6 +1598,7 @@ const terminalLayerAreEqual = (prev: TerminalLayerProps, next: TerminalLayerProp
     prev.hosts === next.hosts &&
     prev.keys === next.keys &&
     prev.snippets === next.snippets &&
+    prev.snippetPackages === next.snippetPackages &&
     prev.sessions === next.sessions &&
     prev.workspaces === next.workspaces &&
     prev.draggingSessionId === next.draggingSessionId &&
@@ -851,11 +1607,18 @@ const terminalLayerAreEqual = (prev: TerminalLayerProps, next: TerminalLayerProp
     prev.fontSize === next.fontSize &&
     prev.hotkeyScheme === next.hotkeyScheme &&
     prev.keyBindings === next.keyBindings &&
+    prev.sftpDoubleClickBehavior === next.sftpDoubleClickBehavior &&
+    prev.sftpAutoSync === next.sftpAutoSync &&
+    prev.sftpShowHiddenFiles === next.sftpShowHiddenFiles &&
+    prev.sftpUseCompressedUpload === next.sftpUseCompressedUpload &&
+    prev.editorWordWrap === next.editorWordWrap &&
+    prev.setEditorWordWrap === next.setEditorWordWrap &&
     prev.onHotkeyAction === next.onHotkeyAction &&
     prev.onUpdateHost === next.onUpdateHost &&
     prev.onToggleWorkspaceViewMode === next.onToggleWorkspaceViewMode &&
     prev.onSetWorkspaceFocusedSession === next.onSetWorkspaceFocusedSession &&
-    prev.onSplitSession === next.onSplitSession
+    prev.onSplitSession === next.onSplitSession &&
+    prev.identities === next.identities
   );
 };
 

components/TopTabs.tsx

@@ -1,11 +1,13 @@
-import { Bell, Copy, FileText, Folder, LayoutGrid, Minus, Moon, MoreHorizontal, Plus, Shield, Square, Sun, TerminalSquare, X } from 'lucide-react';
+import { Bell, Copy, FileText, Folder, LayoutGrid, Minus, Moon, MoreHorizontal, Plus, Server, Shield, Sparkles, Square, Sun, TerminalSquare, Usb, X } from 'lucide-react';
 import React, { memo, useCallback, useEffect, useLayoutEffect, useMemo, useRef, useState } from 'react';
 import { activeTabStore, useActiveTabId } from '../application/state/activeTabStore';
 import { LogView } from '../application/state/useSessionState';
 import { useWindowControls } from '../application/state/useWindowControls';
 import { useI18n } from '../application/i18n/I18nProvider';
+import { normalizeDistroId } from '../domain/host';
 import { cn } from '../lib/utils';
-import { TerminalSession, Workspace } from '../types';
+import { Host, TerminalSession, Workspace } from '../types';
+import { DISTRO_LOGOS, DISTRO_COLORS } from './DistroAvatar';
 import { Button } from './ui/button';
 import { ContextMenu, ContextMenuContent, ContextMenuItem, ContextMenuTrigger } from './ui/context-menu';
 import { SyncStatusButton } from './SyncStatusButton';
@@ -16,6 +18,7 @@ const dragRegionNoSelect = { WebkitAppRegion: 'drag', userSelect: 'none' } as Re
 
 interface TopTabsProps {
   theme: 'dark' | 'light';
+  hosts: Host[];
   sessions: TerminalSession[];
   orphanSessions: TerminalSession[];
   workspaces: Workspace[];
@@ -38,6 +41,82 @@ interface TopTabsProps {
   onReorderTabs: (draggedId: string, targetId: string, position: 'before' | 'after') => void;
 }
 
+// Detect local OS for local terminal tab icons
+const localOsId = (() => {
+  if (typeof navigator === 'undefined') return 'linux';
+  const ua = navigator.userAgent;
+  if (/Mac/i.test(ua)) return 'macos';
+  if (/Win/i.test(ua)) return 'windows';
+  return 'linux';
+})();
+
+// Lightweight OS/distro icon for session tabs — matches DistroAvatar "sm" style
+const SessionTabIcon: React.FC<{ host: Host | undefined; isActive: boolean; protocol?: string }> = memo(({ host, isActive, protocol }) => {
+  const boxBase = "shrink-0 h-4 w-4 rounded flex items-center justify-center";
+  const iconSize = "h-2.5 w-2.5";
+  const fallbackIcon = cn(iconSize, isActive ? "text-accent" : "text-muted-foreground");
+
+  // Serial protocol → USB icon
+  if (protocol === 'serial' || host?.protocol === 'serial') {
+    return (
+      <div className={cn(boxBase, "bg-amber-500/15 text-amber-500")}>
+        <Usb className={iconSize} />
+      </div>
+    );
+  }
+
+  // Local protocol → OS-specific icon (protocol may be undefined for local sessions)
+  if (protocol === 'local' || host?.protocol === 'local' || (!protocol && !host)) {
+    const logo = DISTRO_LOGOS[localOsId];
+    const bg = DISTRO_COLORS[localOsId] || DISTRO_COLORS.default;
+    if (logo) {
+      return (
+        <div className={cn(boxBase, bg)}>
+          <img
+            src={logo}
+            alt={localOsId}
+            className={cn(iconSize, "object-contain invert brightness-0")}
+          />
+        </div>
+      );
+    }
+    return (
+      <div className={cn(boxBase, "bg-primary/15 text-primary")}>
+        <TerminalSquare className={iconSize} />
+      </div>
+    );
+  }
+
+  // Try distro logo with brand background color
+  if (host) {
+    const distro = normalizeDistroId(host.distro) || (host.distro || '').toLowerCase();
+    const logo = DISTRO_LOGOS[distro];
+    if (logo) {
+      const bg = DISTRO_COLORS[distro] || DISTRO_COLORS.default;
+      return (
+        <div className={cn(boxBase, bg)}>
+          <img
+            src={logo}
+            alt={host.distro || host.os}
+            className={cn(iconSize, "object-contain invert brightness-0")}
+          />
+        </div>
+      );
+    }
+  }
+
+  // Fallback: generic server icon for remote, terminal for unknown
+  if (host && host.protocol !== 'local') {
+    return (
+      <div className={cn(boxBase, "bg-primary/15 text-primary")}>
+        <Server className={iconSize} />
+      </div>
+    );
+  }
+  return <TerminalSquare className={fallbackIcon} />;
+});
+SessionTabIcon.displayName = 'SessionTabIcon';
+
 const sessionStatusDot = (status: TerminalSession['status']) => {
   const tone = status === 'connected'
     ? "bg-emerald-400"
@@ -56,12 +135,19 @@ const WindowControls: React.FC = memo(() => {
     // Check initial maximized state
     fetchIsMaximized().then(v => setIsMaximized(!!v));
 
-    // Listen for window resize to update maximized state
+    // Listen for window resize to update maximized state (debounced to avoid IPC storm)
+    let resizeTimer: ReturnType<typeof setTimeout> | null = null;
     const handleResize = () => {
-      fetchIsMaximized().then(v => setIsMaximized(!!v));
+      if (resizeTimer) clearTimeout(resizeTimer);
+      resizeTimer = setTimeout(() => {
+        fetchIsMaximized().then(v => setIsMaximized(!!v));
+      }, 200);
     };
     window.addEventListener('resize', handleResize);
-    return () => window.removeEventListener('resize', handleResize);
+    return () => {
+      window.removeEventListener('resize', handleResize);
+      if (resizeTimer) clearTimeout(resizeTimer);
+    };
   }, [fetchIsMaximized]);
 
   const handleMinimize = () => {
@@ -78,17 +164,17 @@ const WindowControls: React.FC = memo(() => {
   };
 
   return (
-    <div className="flex items-center app-drag">
+    <div className="flex items-center app-drag h-full">
       <button
         onClick={handleMinimize}
-        className="h-8 w-10 flex items-center justify-center text-muted-foreground hover:bg-foreground/10 hover:text-foreground transition-all duration-150 app-no-drag"
+        className="h-full w-10 flex items-center justify-center text-muted-foreground hover:bg-foreground/10 hover:text-foreground transition-all duration-150 app-no-drag"
         title="Minimize"
       >
         <Minus size={16} />
       </button>
       <button
         onClick={handleMaximize}
-        className="h-8 w-10 flex items-center justify-center text-muted-foreground hover:bg-foreground/10 hover:text-foreground transition-all duration-150 app-no-drag"
+        className="h-full w-10 flex items-center justify-center text-muted-foreground hover:bg-foreground/10 hover:text-foreground transition-all duration-150 app-no-drag"
         title={isMaximized ? "Restore" : "Maximize"}
       >
         {isMaximized ? (
@@ -101,7 +187,7 @@ const WindowControls: React.FC = memo(() => {
       </button>
       <button
         onClick={handleClose}
-        className="h-8 w-10 flex items-center justify-center text-muted-foreground hover:bg-red-500 hover:text-white transition-all duration-150 app-no-drag"
+        className="h-full w-10 flex items-center justify-center text-muted-foreground hover:bg-red-500 hover:text-white transition-all duration-150 app-no-drag"
         title="Close"
       >
         <X size={16} />
@@ -113,6 +199,7 @@ WindowControls.displayName = 'WindowControls';
 
 const TopTabsInner: React.FC<TopTabsProps> = ({
   theme,
+  hosts,
   sessions,
   orphanSessions,
   workspaces,
@@ -235,6 +322,12 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
     return map;
   }, [logViews]);
 
+  const hostMap = useMemo(() => {
+    const map = new Map<string, Host>();
+    for (const h of hosts) map.set(h.id, h);
+    return map;
+  }, [hosts]);
+
   // Pre-compute session counts per workspace for O(1) access
   const workspacePaneCounts = useMemo(() => {
     const counts = new Map<string, number>();
@@ -376,26 +469,29 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
                 onDragLeave={handleTabDragLeave}
                 onDrop={(e) => handleTabDrop(e, session.id)}
                 className={cn(
-                  "relative h-6 pl-3 pr-2 min-w-[140px] max-w-[240px] rounded-md border text-xs font-semibold cursor-pointer flex items-center justify-between gap-2 app-no-drag flex-shrink-0",
-                  "transition-all duration-200 ease-out",
-                  activeTabId === session.id ? "bg-accent/20 text-foreground" : "border-border/60 text-muted-foreground hover:border-accent/40 hover:text-foreground",
+                  "relative h-7 pl-3 pr-2 min-w-[140px] max-w-[240px] rounded-none text-xs font-semibold cursor-pointer flex items-center justify-between gap-2 app-no-drag flex-shrink-0",
+                  "transition-all duration-150",
+                  activeTabId === session.id
+                    ? "bg-background text-foreground"
+                    : "text-muted-foreground hover:bg-background/40 hover:text-foreground",
                   isBeingDragged && isDraggingForReorder ? "opacity-40 scale-95" : ""
                 )}
-                style={{
-                  ...shiftStyle,
-                  ...(activeTabId === session.id ? { borderColor: 'hsl(var(--accent))' } : {})
-                }}
+                style={shiftStyle}
               >
+                {/* Active tab top accent line */}
+                {activeTabId === session.id && (
+                  <div className="absolute top-0 left-0 right-0 h-[2px] bg-accent" />
+                )}
                 {/* Drop indicator line - before */}
                 {showDropIndicatorBefore && isDraggingForReorder && (
-                  <div className="absolute -left-1.5 top-1 bottom-1 w-0.5 bg-primary rounded-full shadow-[0_0_8px_2px] shadow-primary/50 animate-pulse" />
+                  <div className="absolute -left-0.5 top-1 bottom-1 w-0.5 bg-primary rounded-full shadow-[0_0_8px_2px] shadow-primary/50 animate-pulse" />
                 )}
                 {/* Drop indicator line - after */}
                 {showDropIndicatorAfter && isDraggingForReorder && (
-                  <div className="absolute -right-1.5 top-1 bottom-1 w-0.5 bg-primary rounded-full shadow-[0_0_8px_2px] shadow-primary/50 animate-pulse" />
+                  <div className="absolute -right-0.5 top-1 bottom-1 w-0.5 bg-primary rounded-full shadow-[0_0_8px_2px] shadow-primary/50 animate-pulse" />
                 )}
                 <div className="flex items-center gap-2 min-w-0 flex-1">
-                  <TerminalSquare size={14} className={cn("shrink-0", activeTabId === session.id ? "text-accent" : "text-muted-foreground")} />
+                  <SessionTabIcon host={hostMap.get(session.hostId)} isActive={activeTabId === session.id} protocol={session.protocol} />
                   <span className="truncate">{session.hostLabel}</span>
                   <div className="flex-shrink-0">{sessionStatusDot(session.status)}</div>
                 </div>
@@ -445,23 +541,26 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
                 onDragLeave={handleTabDragLeave}
                 onDrop={(e) => handleTabDrop(e, workspace.id)}
                 className={cn(
-                  "relative h-6 pl-3 pr-2 min-w-[150px] max-w-[260px] rounded-md border text-xs font-semibold cursor-pointer flex items-center justify-between gap-2 app-no-drag flex-shrink-0",
-                  "transition-all duration-200 ease-out",
-                  isActive ? "bg-accent/20 text-foreground" : "border-border/60 text-muted-foreground hover:border-accent/40 hover:text-foreground",
+                  "relative h-7 pl-3 pr-2 min-w-[150px] max-w-[260px] rounded-none text-xs font-semibold cursor-pointer flex items-center justify-between gap-2 app-no-drag flex-shrink-0",
+                  "transition-all duration-150",
+                  isActive
+                    ? "bg-background text-foreground"
+                    : "text-muted-foreground hover:bg-background/40 hover:text-foreground",
                   isBeingDragged && isDraggingForReorder ? "opacity-40 scale-95" : ""
                 )}
-                style={{
-                  ...shiftStyle,
-                  ...(isActive ? { borderColor: 'hsl(var(--accent))' } : {})
-                }}
+                style={shiftStyle}
               >
+                {/* Active tab top accent line */}
+                {isActive && (
+                  <div className="absolute top-0 left-0 right-0 h-[2px] bg-accent" />
+                )}
                 {/* Drop indicator line - before */}
                 {showDropIndicatorBefore && isDraggingForReorder && (
-                  <div className="absolute -left-1.5 top-1 bottom-1 w-0.5 bg-primary rounded-full shadow-[0_0_8px_2px] shadow-primary/50 animate-pulse" />
+                  <div className="absolute -left-0.5 top-1 bottom-1 w-0.5 bg-primary rounded-full shadow-[0_0_8px_2px] shadow-primary/50 animate-pulse" />
                 )}
                 {/* Drop indicator line - after */}
                 {showDropIndicatorAfter && isDraggingForReorder && (
-                  <div className="absolute -right-1.5 top-1 bottom-1 w-0.5 bg-primary rounded-full shadow-[0_0_8px_2px] shadow-primary/50 animate-pulse" />
+                  <div className="absolute -right-0.5 top-1 bottom-1 w-0.5 bg-primary rounded-full shadow-[0_0_8px_2px] shadow-primary/50 animate-pulse" />
                 )}
                 <div className="flex items-center gap-2 truncate">
                   <LayoutGrid size={14} className={cn("shrink-0", isActive ? "text-primary" : "text-muted-foreground")} />
@@ -495,12 +594,17 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
             data-tab-id={logView.id}
             onClick={() => onSelectTab(logView.id)}
             className={cn(
-              "relative h-6 pl-3 pr-2 min-w-[140px] max-w-[240px] rounded-md border text-xs font-semibold cursor-pointer flex items-center justify-between gap-2 app-no-drag flex-shrink-0",
-              "transition-all duration-200 ease-out",
-              isActive ? "bg-accent/20 text-foreground" : "border-border/60 text-muted-foreground hover:border-accent/40 hover:text-foreground"
+              "relative h-7 pl-3 pr-2 min-w-[140px] max-w-[240px] rounded-none text-xs font-semibold cursor-pointer flex items-center justify-between gap-2 app-no-drag flex-shrink-0",
+              "transition-colors duration-150",
+              isActive
+                ? "bg-background text-foreground"
+                : "text-muted-foreground hover:bg-background/40 hover:text-foreground"
             )}
-            style={isActive ? { borderColor: 'hsl(var(--accent))' } : {}}
           >
+            {/* Active tab top accent line */}
+            {isActive && (
+              <div className="absolute top-0 left-0 right-0 h-[2px] bg-accent" />
+            )}
             <div className="flex items-center gap-2 min-w-0 flex-1">
               <FileText size={14} className={cn("shrink-0", isActive ? "text-accent" : "text-muted-foreground")} />
               <span className="truncate">
@@ -536,36 +640,41 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
 
   return (
     <div
-      className="relative w-full bg-secondary border-b border-border/60 app-drag"
+      className="relative w-full bg-secondary app-drag"
       style={dragRegionNoSelect}
       onDoubleClick={handleTitleBarDoubleClick}
     >
       {/* Always-on drag stripe so the window can be moved even when tabs fill the bar */}
       <div className="absolute inset-x-0 top-0 h-1 app-drag pointer-events-auto z-10" style={dragRegionStyle} aria-hidden />
       <div
-        className="h-8 flex items-center gap-2 app-drag"
+        className="h-9 flex items-end gap-0 app-drag"
         style={{ ...dragRegionStyle, paddingLeft: isMacClient && !isWindowFullscreen ? 76 : 12, paddingRight: isMacClient ? 12 : 0 }}
       >
         {/* Fixed left tabs: Vaults and SFTP */}
-        <div className="flex items-center gap-2 flex-shrink-0 app-drag">
+        <div className="flex items-end gap-0 flex-shrink-0 app-drag">
           <div
             onClick={() => onSelectTab('vault')}
             className={cn(
-              "h-6 px-3 rounded-md border text-xs font-semibold cursor-pointer flex items-center gap-2 app-no-drag",
-              isVaultActive ? "bg-accent/20 text-foreground" : "border-border/60 text-muted-foreground hover:border-accent/40 hover:text-foreground"
+              "relative h-7 px-3 rounded text-xs font-semibold cursor-pointer flex items-center gap-2 app-no-drag",
+              "transition-colors duration-150",
+              isVaultActive
+                ? "bg-foreground/10 text-foreground"
+                : "text-muted-foreground hover:bg-background/40 hover:text-foreground"
             )}
-            style={isVaultActive ? { borderColor: 'hsl(var(--accent))' } : undefined}
           >
             <Shield size={14} /> Vaults
           </div>
           <div
             onClick={() => onSelectTab('sftp')}
             className={cn(
-              "h-6 px-3 rounded-md border text-xs font-semibold cursor-pointer flex items-center gap-2 app-no-drag",
-              isSftpActive ? "bg-accent/20 text-foreground" : "border-border/60 text-muted-foreground hover:border-accent/40 hover:text-foreground"
+              "relative h-7 px-3 rounded-none text-xs font-semibold cursor-pointer flex items-center gap-2 app-no-drag",
+              "transition-colors duration-150",
+              isSftpActive
+                ? "bg-background text-foreground"
+                : "text-muted-foreground hover:bg-background/40 hover:text-foreground"
             )}
-            style={isSftpActive ? { borderColor: 'hsl(var(--accent))' } : undefined}
           >
+            {isSftpActive && <div className="absolute top-0 left-0 right-0 h-[2px] bg-accent" />}
             <Folder size={14} /> SFTP
           </div>
         </div>
@@ -594,7 +703,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
           {/* Scrollable container */}
           <div
             ref={tabsContainerRef}
-            className="flex items-center gap-2 overflow-x-auto scrollbar-none app-drag max-w-full"
+            className="flex items-end gap-0 overflow-x-auto scrollbar-none app-drag max-w-full"
             style={{ scrollbarWidth: 'none', msOverflowStyle: 'none' }}
           >
             {renderOrderedTabs()}
@@ -603,7 +712,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
               <Button
                 variant="ghost"
                 size="icon"
-                className="h-6 w-6 flex-shrink-0 app-no-drag"
+                className="h-7 w-7 flex-shrink-0 app-no-drag mb-0 rounded-none"
                 onClick={onOpenQuickSwitcher}
                 title="Open quick switcher"
               >
@@ -611,7 +720,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
               </Button>
             )}
             {/* Draggable spacer - fixed width handle at the end */}
-            <div className="min-w-[20px] h-6 app-drag flex-shrink-0" style={dragRegionStyle} />
+            <div className="min-w-[20px] h-7 app-drag flex-shrink-0" style={dragRegionStyle} />
           </div>
 
           {/* Right fade mask */}
@@ -628,7 +737,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
           <Button
             variant="ghost"
             size="icon"
-            className="h-6 w-6 flex-shrink-0 app-no-drag"
+            className="h-7 w-7 flex-shrink-0 app-no-drag self-end rounded-none"
             onClick={onOpenQuickSwitcher}
             title="More tabs"
           >
@@ -637,7 +746,16 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
         )}
 
         {/* Fixed right controls */}
-        <div className="flex-shrink-0 flex items-center gap-2 app-drag" style={dragRegionStyle}>
+        <div className="flex-shrink-0 flex items-center gap-2 app-drag self-center" style={dragRegionStyle}>
+          <Button
+            variant="ghost"
+            size="icon"
+            className="h-6 w-6 text-muted-foreground hover:text-foreground app-no-drag"
+            title="AI Assistant"
+            onClick={() => window.dispatchEvent(new CustomEvent('netcatty:toggle-ai-panel'))}
+          >
+            <Sparkles size={16} />
+          </Button>
           <Button variant="ghost" size="icon" className="h-6 w-6 text-muted-foreground hover:text-foreground app-no-drag">
             <Bell size={16} />
           </Button>
@@ -653,9 +771,9 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
           </Button>
         </div>
         {/* Custom window controls for Windows/Linux */}
-        {!isMacClient && <WindowControls />}
+        {!isMacClient && <div className="self-stretch flex items-stretch"><WindowControls /></div>}
         {/* Small drag shim to the right edge (macOS only – on Windows the close button should touch the edge) */}
-        {isMacClient && <div className="w-2 h-8 app-drag flex-shrink-0" />}
+        {isMacClient && <div className="w-2 h-9 app-drag flex-shrink-0" />}
       </div>
     </div>
   );
@@ -665,6 +783,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
 const topTabsAreEqual = (prev: TopTabsProps, next: TopTabsProps): boolean => {
   return (
     prev.theme === next.theme &&
+    prev.hosts === next.hosts &&
     prev.sessions === next.sessions &&
     prev.orphanSessions === next.orphanSessions &&
     prev.workspaces === next.workspaces &&

components/TrayPanel.tsx

@@ -152,7 +152,7 @@ const TrayPanelContent: React.FC = () => {
   }, [onTrayPanelRefresh]);
 
   const keysForPf = useMemo(
-    () => keys.map((k) => ({ id: k.id, privateKey: k.privateKey })),
+    () => keys.map((k) => ({ id: k.id, privateKey: k.privateKey, passphrase: k.passphrase })),
     [keys],
   );
 

components/VaultView.tsx

@@ -715,6 +715,26 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
     return root;
   }, [hosts, customGroups]);
 
+  // Generate all possible group paths from the tree (including all intermediate nodes)
+  const allGroupPaths = useMemo(() => {
+    const paths = new Set<string>();
+
+    const traverse = (nodes: Record<string, GroupNode>) => {
+      Object.values(nodes).forEach((node) => {
+        if (node.path) {
+          paths.add(node.path);
+        }
+        if (node.children) {
+          traverse(node.children);
+        }
+      });
+    };
+
+    // Traverse the tree
+    traverse(buildGroupTree);
+
+    return Array.from(paths).sort();
+  }, [buildGroupTree]);
 
   const findGroupNode = (path: string | null): GroupNode | null => {
     if (!path)
@@ -879,6 +899,17 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
     return root;
   }, [treeViewHosts, customGroups]);
 
+  // Helper function to recursively count all hosts in a node and its children
+  const countAllHostsInNode = (node: GroupNode): number => {
+    let count = node.hosts.length;
+    if (node.children) {
+      Object.values(node.children).forEach((child) => {
+        count += countAllHostsInNode(child);
+      });
+    }
+    return count;
+  };
+
   // Create tree view specific group tree that excludes ungrouped hosts
   const treeViewGroupTree = useMemo<GroupNode[]>(() => {
     return (Object.values(buildTreeViewGroupTree) as GroupNode[]).sort((a, b) => a.name.localeCompare(b.name));
@@ -1718,7 +1749,7 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
                                       )}
                                     </div>
                                     <div className="text-[11px] text-muted-foreground">
-                                      {t("vault.groups.hostsCount", { count: node.hosts.length })}
+                                      {t("vault.groups.hostsCount", { count: countAllHostsInNode(node) })}
                                     </div>
                                   </div>
                                 </div>
@@ -2170,6 +2201,7 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
                   : [...snippets, s],
               )
             }
+            onBulkSave={onUpdateSnippets}
             onDelete={(id) =>
               onUpdateSnippets(snippets.filter((s) => s.id !== id))
             }
@@ -2270,12 +2302,7 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
           initialData={editingHost}
           availableKeys={keys}
           identities={identities}
-          groups={Array.from(
-            new Set([
-              ...customGroups,
-              ...hosts.map((h) => h.group || "General"),
-            ]),
-          )}
+          groups={allGroupPaths}
           managedSources={managedSources}
           allTags={allTags}
           allHosts={hosts}
@@ -2310,12 +2337,7 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
         <SerialHostDetailsPanel
           initialData={editingHost}
           allTags={allTags}
-          groups={Array.from(
-            new Set([
-              ...customGroups,
-              ...hosts.map((h) => h.group || "General"),
-            ]),
-          )}
+          groups={allGroupPaths}
           onSave={(host) => {
             onUpdateHosts(
               hosts.map((h) => (h.id === host.id ? host : h)),

components/ai-elements/conversation.tsx

@@ -0,0 +1,89 @@
+import { cn } from '../../lib/utils';
+import type { ComponentProps, HTMLAttributes, ReactNode } from 'react';
+import React, { useCallback } from 'react';
+import { StickToBottom, useStickToBottomContext } from 'use-stick-to-bottom';
+import { ArrowDown } from 'lucide-react';
+
+export type ConversationProps = ComponentProps<typeof StickToBottom>;
+
+export const Conversation = ({ className, ...props }: ConversationProps) => (
+  <StickToBottom
+    className={cn('relative flex-1 overflow-y-hidden', className)}
+    initial="smooth"
+    resize="smooth"
+    role="log"
+    {...props}
+  />
+);
+
+export type ConversationContentProps = ComponentProps<typeof StickToBottom.Content>;
+
+export const ConversationContent = ({ className, ...props }: ConversationContentProps) => (
+  <StickToBottom.Content
+    className={cn('flex flex-col gap-4 p-4', className)}
+    {...props}
+  />
+);
+
+export interface ConversationEmptyStateProps extends HTMLAttributes<HTMLDivElement> {
+  title?: string;
+  description?: string;
+  icon?: ReactNode;
+}
+
+export const ConversationEmptyState = ({
+  className,
+  title,
+  description,
+  icon,
+  children,
+  ...props
+}: ConversationEmptyStateProps) => (
+  <div
+    className={cn(
+      'flex size-full flex-col items-center justify-center gap-3 p-8 text-center',
+      className,
+    )}
+    {...props}
+  >
+    {children ?? (
+      <>
+        {icon && <div className="text-muted-foreground">{icon}</div>}
+        <div className="space-y-1">
+          <h3 className="font-medium text-sm">{title}</h3>
+          {description && (
+            <p className="text-muted-foreground text-sm">{description}</p>
+          )}
+        </div>
+      </>
+    )}
+  </div>
+);
+
+export const ConversationScrollButton = ({ className, ...props }: React.ButtonHTMLAttributes<HTMLButtonElement>) => {
+  const { isAtBottom, scrollToBottom } = useStickToBottomContext();
+
+  const handleClick = useCallback(() => {
+    scrollToBottom();
+  }, [scrollToBottom]);
+
+  if (isAtBottom) return null;
+
+  return (
+    <button
+      type="button"
+      className={cn(
+        'absolute bottom-3 left-1/2 -translate-x-1/2 z-10',
+        'h-7 w-7 rounded-full border border-border/40 bg-background/90 backdrop-blur-sm',
+        'flex items-center justify-center',
+        'text-muted-foreground hover:text-foreground hover:bg-muted transition-colors cursor-pointer',
+        'shadow-sm',
+        className,
+      )}
+      onClick={handleClick}
+      {...props}
+    >
+      <ArrowDown size={14} />
+    </button>
+  );
+};

components/ai-elements/message.tsx

@@ -0,0 +1,87 @@
+import { cn } from '../../lib/utils';
+import { cjk } from '@streamdown/cjk';
+import { code } from '@streamdown/code';
+import type { ComponentProps, HTMLAttributes } from 'react';
+import { memo } from 'react';
+import { Streamdown } from 'streamdown';
+
+export type MessageProps = HTMLAttributes<HTMLDivElement> & {
+  from: 'user' | 'assistant' | 'system' | 'tool';
+};
+
+export const Message = ({ className, from, ...props }: MessageProps) => (
+  <div
+    className={cn(
+      'group flex w-full max-w-[95%] flex-col gap-1.5',
+      from === 'user' ? 'is-user ml-auto' : 'is-assistant',
+      className,
+    )}
+    {...props}
+  />
+);
+
+export type MessageContentProps = HTMLAttributes<HTMLDivElement>;
+
+export const MessageContent = ({ children, className, ...props }: MessageContentProps) => (
+  <div
+    className={cn(
+      'flex w-fit min-w-0 max-w-full flex-col gap-1.5 overflow-hidden text-[13px] leading-relaxed',
+      'group-[.is-user]:ml-auto group-[.is-user]:rounded-lg group-[.is-user]:border group-[.is-user]:border-border/50 group-[.is-user]:bg-muted/50 group-[.is-user]:px-4 group-[.is-user]:py-2.5',
+      'group-[.is-assistant]:w-full group-[.is-assistant]:text-foreground/90',
+      className,
+    )}
+    {...props}
+  >
+    {children}
+  </div>
+);
+
+export type MessageActionsProps = ComponentProps<'div'>;
+
+export const MessageActions = ({ className, children, ...props }: MessageActionsProps) => (
+  <div
+    className={cn(
+      'flex items-center gap-1 opacity-0 group-hover:opacity-100 transition-opacity',
+      className,
+    )}
+    {...props}
+  >
+    {children}
+  </div>
+);
+
+const streamdownPlugins = { cjk, code };
+
+export type MessageResponseProps = ComponentProps<typeof Streamdown>;
+
+export const MessageResponse = memo(
+  ({ className, ...props }: MessageResponseProps) => (
+    <Streamdown
+      className={cn(
+        'size-full [&>*:first-child]:mt-0 [&>*:last-child]:mb-0',
+        // Style the rendered markdown
+        // Code: base styles (code-block overrides are in index.css)
+        '[&_code]:text-[12px] [&_code]:font-mono',
+        '[&_p_code]:px-[0.4em] [&_p_code]:py-[0.15em] [&_p_code]:rounded [&_p_code]:bg-foreground/[0.06] [&_p_code]:text-[85%]',
+        '[&_p]:my-1.5',
+        '[&_ul]:my-1.5 [&_ul]:pl-4 [&_ul]:list-disc',
+        '[&_ol]:my-1.5 [&_ol]:pl-4 [&_ol]:list-decimal',
+        '[&_li]:my-0.5',
+        '[&_h1]:text-base [&_h1]:font-semibold [&_h1]:mt-4 [&_h1]:mb-2',
+        '[&_h2]:text-sm [&_h2]:font-semibold [&_h2]:mt-3 [&_h2]:mb-1.5',
+        '[&_h3]:text-sm [&_h3]:font-medium [&_h3]:mt-2 [&_h3]:mb-1',
+        '[&_blockquote]:border-l-2 [&_blockquote]:border-border/50 [&_blockquote]:pl-3 [&_blockquote]:text-muted-foreground',
+        '[&_a]:text-primary [&_a]:underline',
+        '[&_hr]:border-border/30 [&_hr]:my-3',
+        '[&_table]:text-[12px] [&_th]:px-2 [&_th]:py-1 [&_th]:border [&_th]:border-border/30 [&_th]:bg-muted/20 [&_td]:px-2 [&_td]:py-1 [&_td]:border [&_td]:border-border/30',
+        className,
+      )}
+      plugins={streamdownPlugins}
+      {...props}
+    />
+  ),
+  (prevProps, nextProps) =>
+    prevProps.children === nextProps.children &&
+    nextProps.isAnimating === prevProps.isAnimating,
+);
+MessageResponse.displayName = 'MessageResponse';

components/ai-elements/prompt-input.tsx

@@ -0,0 +1,283 @@
+/**
+ * PromptInput - Adapted from Vercel AI Elements prompt-input for netcatty.
+ *
+ * Simplified: no file attachments, screenshots, drag-drop, command palette,
+ * hover cards, referenced sources, or tabs. Core input + footer + submit.
+ */
+
+import { ArrowUp, Square, X } from 'lucide-react';
+import type {
+  ComponentProps,
+  ComponentPropsWithoutRef,
+  ElementRef,
+  FormEvent,
+  HTMLAttributes,
+  KeyboardEvent,
+  ReactNode,
+} from 'react';
+import { forwardRef, useCallback, useRef } from 'react';
+import { cn } from '../../lib/utils';
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from '../ui/select';
+import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '../ui/tooltip';
+import {
+  InputGroup,
+  InputGroupAddon,
+  InputGroupButton,
+  InputGroupTextarea,
+} from '../ui/input-group';
+import { Spinner } from '../ui/spinner';
+
+// ---------------------------------------------------------------------------
+// PromptInput (form wrapper)
+// ---------------------------------------------------------------------------
+
+export interface PromptInputProps extends HTMLAttributes<HTMLFormElement> {
+  onSubmit: (text: string, event: FormEvent<HTMLFormElement>) => void | Promise<void>;
+}
+
+export const PromptInput = forwardRef<HTMLFormElement, PromptInputProps>(
+  ({ className, onSubmit, children, ...props }, ref) => {
+    const handleSubmit = useCallback(
+      (e: FormEvent<HTMLFormElement>) => {
+        e.preventDefault();
+        const form = e.currentTarget;
+        const textarea = form.querySelector('textarea');
+        const text = textarea?.value?.trim() ?? '';
+        if (!text) return;
+        onSubmit(text, e);
+      },
+      [onSubmit],
+    );
+
+    return (
+      <form ref={ref} onSubmit={handleSubmit} className={className} {...props}>
+        <InputGroup>{children}</InputGroup>
+      </form>
+    );
+  },
+);
+PromptInput.displayName = 'PromptInput';
+
+// ---------------------------------------------------------------------------
+// PromptInputTextarea
+// ---------------------------------------------------------------------------
+
+export interface PromptInputTextareaProps extends ComponentProps<'textarea'> {
+  /** Called when Enter is pressed (without Shift) to trigger form submit */
+  onSubmitRequest?: () => void;
+}
+
+export const PromptInputTextarea = forwardRef<HTMLTextAreaElement, PromptInputTextareaProps>(
+  ({ className, onSubmitRequest, onKeyDown, ...props }, ref) => {
+    const internalRef = useRef<HTMLTextAreaElement | null>(null);
+
+    const setRef = useCallback(
+      (node: HTMLTextAreaElement | null) => {
+        internalRef.current = node;
+        if (typeof ref === 'function') ref(node);
+        else if (ref) ref.current = node;
+      },
+      [ref],
+    );
+
+    const handleKeyDown = useCallback(
+      (e: KeyboardEvent<HTMLTextAreaElement>) => {
+        onKeyDown?.(e);
+        if (e.defaultPrevented) return;
+
+        // CJK composition guard
+        if (e.nativeEvent.isComposing) return;
+
+        if (e.key === 'Enter' && !e.shiftKey) {
+          e.preventDefault();
+          onSubmitRequest?.();
+          // Trigger form submit
+          const form = internalRef.current?.closest('form');
+          if (form) {
+            form.requestSubmit();
+          }
+        }
+      },
+      [onKeyDown, onSubmitRequest],
+    );
+
+    return (
+      <InputGroupTextarea
+        ref={setRef}
+        className={className}
+        onKeyDown={handleKeyDown}
+        {...props}
+      />
+    );
+  },
+);
+PromptInputTextarea.displayName = 'PromptInputTextarea';
+
+// ---------------------------------------------------------------------------
+// PromptInputFooter
+// ---------------------------------------------------------------------------
+
+export type PromptInputFooterProps = HTMLAttributes<HTMLDivElement>;
+
+export const PromptInputFooter = forwardRef<HTMLDivElement, PromptInputFooterProps>(
+  ({ className, ...props }, ref) => (
+    <InputGroupAddon
+      ref={ref}
+      align="block-end"
+      className={cn('gap-1', className)}
+      {...props}
+    />
+  ),
+);
+PromptInputFooter.displayName = 'PromptInputFooter';
+
+// ---------------------------------------------------------------------------
+// PromptInputTools (left side of footer)
+// ---------------------------------------------------------------------------
+
+export type PromptInputToolsProps = HTMLAttributes<HTMLDivElement>;
+
+export const PromptInputTools = forwardRef<HTMLDivElement, PromptInputToolsProps>(
+  ({ className, ...props }, ref) => (
+    <div
+      ref={ref}
+      className={cn('flex items-center gap-0.5', className)}
+      {...props}
+    />
+  ),
+);
+PromptInputTools.displayName = 'PromptInputTools';
+
+// ---------------------------------------------------------------------------
+// PromptInputButton (toolbar button with optional tooltip)
+// ---------------------------------------------------------------------------
+
+export interface PromptInputButtonProps extends ComponentProps<typeof InputGroupButton> {
+  tooltip?: ReactNode;
+  tooltipSide?: 'top' | 'bottom' | 'left' | 'right';
+}
+
+export const PromptInputButton = forwardRef<HTMLButtonElement, PromptInputButtonProps>(
+  ({ tooltip, tooltipSide = 'top', ...props }, ref) => {
+    const button = <InputGroupButton ref={ref} {...props} />;
+
+    if (!tooltip) return button;
+
+    return (
+      <TooltipProvider>
+        <Tooltip>
+          <TooltipTrigger asChild>{button}</TooltipTrigger>
+          <TooltipContent side={tooltipSide}>{tooltip}</TooltipContent>
+        </Tooltip>
+      </TooltipProvider>
+    );
+  },
+);
+PromptInputButton.displayName = 'PromptInputButton';
+
+// ---------------------------------------------------------------------------
+// PromptInputSubmit
+// ---------------------------------------------------------------------------
+
+export type PromptInputStatus = 'idle' | 'submitted' | 'streaming' | 'error';
+
+export interface PromptInputSubmitProps extends ComponentProps<typeof InputGroupButton> {
+  status?: PromptInputStatus;
+  onStop?: () => void;
+}
+
+export const PromptInputSubmit = forwardRef<HTMLButtonElement, PromptInputSubmitProps>(
+  ({ status = 'idle', onStop, className, disabled, ...props }, ref) => {
+    const isRunning = status === 'submitted' || status === 'streaming';
+
+    const handleClick = useCallback(() => {
+      if (isRunning && onStop) {
+        onStop();
+      }
+    }, [isRunning, onStop]);
+
+    const icon =
+      status === 'submitted' ? (
+        <Spinner size={14} />
+      ) : status === 'streaming' ? (
+        <Square size={14} />
+      ) : status === 'error' ? (
+        <X size={14} />
+      ) : (
+        <ArrowUp size={14} />
+      );
+
+    const tooltipLabel =
+      status === 'submitted'
+        ? 'Waiting...'
+        : status === 'streaming'
+          ? 'Stop'
+          : status === 'error'
+            ? 'Error'
+            : 'Send';
+
+    return (
+      <TooltipProvider>
+        <Tooltip>
+          <TooltipTrigger asChild>
+            <InputGroupButton
+              ref={ref}
+              type={isRunning ? 'button' : 'submit'}
+              onClick={isRunning ? handleClick : undefined}
+              variant="ghost"
+              disabled={disabled && !isRunning}
+              className={cn(
+                'h-8 w-8 rounded-full border p-0 shadow-sm disabled:opacity-100',
+                isRunning
+                  ? 'border-destructive/60 bg-destructive/85 text-destructive-foreground hover:bg-destructive'
+                  : disabled
+                    ? 'border-border/80 bg-muted/52 text-foreground/72 hover:bg-muted/52'
+                    : 'border-foreground/20 bg-foreground text-background hover:bg-foreground/90',
+                className,
+              )}
+              {...props}
+            >
+              {icon}
+            </InputGroupButton>
+          </TooltipTrigger>
+          <TooltipContent side="top">{tooltipLabel}</TooltipContent>
+        </Tooltip>
+      </TooltipProvider>
+    );
+  },
+);
+PromptInputSubmit.displayName = 'PromptInputSubmit';
+
+// ---------------------------------------------------------------------------
+// PromptInputSelect (thin wrappers around the project's Select component)
+// ---------------------------------------------------------------------------
+
+export const PromptInputSelect = Select;
+
+export const PromptInputSelectTrigger = forwardRef<
+  ElementRef<typeof SelectTrigger>,
+  ComponentPropsWithoutRef<typeof SelectTrigger>
+>(({ className, ...props }, ref) => (
+  <SelectTrigger
+    ref={ref}
+    className={cn(
+      'h-7 min-w-0 w-auto gap-1 border-none bg-transparent px-2 text-[11px]',
+      'text-muted-foreground/40 hover:text-muted-foreground/70',
+      'focus:ring-0 focus:ring-offset-0',
+      '[&>svg]:h-3 [&>svg]:w-3 [&>svg]:opacity-40',
+      className,
+    )}
+    {...props}
+  />
+));
+PromptInputSelectTrigger.displayName = 'PromptInputSelectTrigger';
+
+export const PromptInputSelectContent = SelectContent;
+export const PromptInputSelectItem = SelectItem;
+export const PromptInputSelectValue = SelectValue;

components/ai-elements/tool-call.tsx

@@ -0,0 +1,65 @@
+import { cn } from '../../lib/utils';
+import { ChevronDown, ChevronRight, CheckCircle2, Loader2, XCircle } from 'lucide-react';
+import type { HTMLAttributes } from 'react';
+import { useState } from 'react';
+
+export interface ToolCallProps extends HTMLAttributes<HTMLDivElement> {
+  name: string;
+  args?: Record<string, unknown>;
+  result?: unknown;
+  isError?: boolean;
+  isLoading?: boolean;
+}
+
+export const ToolCall = ({ name, args, result, isError, isLoading, className, ...props }: ToolCallProps) => {
+  const [expanded, setExpanded] = useState(false);
+
+  const statusIcon = isLoading ? (
+    <Loader2 size={12} className="animate-spin text-blue-400/70" />
+  ) : isError ? (
+    <XCircle size={12} className="text-red-400/70" />
+  ) : result !== undefined ? (
+    <CheckCircle2 size={12} className="text-green-400/70" />
+  ) : null;
+
+  return (
+    <div className={cn('rounded-md border border-border/25 bg-muted/10 overflow-hidden text-[12px]', className)} {...props}>
+      <button
+        type="button"
+        onClick={() => setExpanded(e => !e)}
+        className="w-full flex items-center gap-2 px-3 py-1.5 hover:bg-muted/20 transition-colors cursor-pointer"
+      >
+        {expanded
+          ? <ChevronDown size={12} className="text-muted-foreground/40 shrink-0" />
+          : <ChevronRight size={12} className="text-muted-foreground/40 shrink-0" />
+        }
+        <span className="font-mono text-muted-foreground/70 truncate">{name}</span>
+        <span className="flex-1" />
+        {statusIcon}
+      </button>
+      {expanded && (
+        <div className="border-t border-border/20">
+          {args && Object.keys(args).length > 0 && (
+            <div className="px-3 py-2">
+              <div className="text-[10px] font-medium uppercase tracking-wider text-muted-foreground/30 mb-1">Arguments</div>
+              <pre className="text-[11px] font-mono text-muted-foreground/50 whitespace-pre-wrap break-all">
+                {JSON.stringify(args, null, 2)}
+              </pre>
+            </div>
+          )}
+          {result !== undefined && (
+            <div className="px-3 py-2 border-t border-border/20">
+              <div className="text-[10px] font-medium uppercase tracking-wider text-muted-foreground/30 mb-1">Result</div>
+              <pre className={cn(
+                'text-[11px] font-mono whitespace-pre-wrap break-all',
+                isError ? 'text-red-400/60' : 'text-muted-foreground/50',
+              )}>
+                {typeof result === 'string' ? result : JSON.stringify(result, null, 2)}
+              </pre>
+            </div>
+          )}
+        </div>
+      )}
+    </div>
+  );
+};

components/ai/AgentIconBadge.tsx

@@ -0,0 +1,220 @@
+import React from 'react';
+import { cn } from '../../lib/utils';
+
+type AgentLike = {
+  id?: string;
+  name?: string;
+  type?: 'builtin' | 'external';
+  icon?: string;
+  command?: string;
+};
+
+type AgentIconKey =
+  | 'catty'
+  | 'openai'
+  | 'claude'
+  | 'anthropic'
+  | 'gemini'
+  | 'google'
+  | 'ollama'
+  | 'openrouter'
+  | 'zed'
+  | 'atom'
+| 'terminal'
+  | 'plus';
+
+type AgentIconVisual = {
+  src: string;
+  badgeClassName: string;
+  imageClassName: string;
+};
+
+const AGENT_ICON_VISUALS: Record<AgentIconKey, AgentIconVisual> = {
+  catty: {
+    src: '/ai/agents/catty.svg',
+    badgeClassName: 'border-violet-500/20 bg-violet-500/10',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert opacity-90',
+  },
+  openai: {
+    src: '/ai/providers/openai.svg',
+    badgeClassName: 'border-emerald-500/22 bg-emerald-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  claude: {
+    src: '/ai/agents/claude.svg',
+    badgeClassName: 'border-orange-500/22 bg-orange-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  anthropic: {
+    src: '/ai/providers/anthropic.svg',
+    badgeClassName: 'border-orange-500/22 bg-orange-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  gemini: {
+    src: '/ai/agents/gemini.svg',
+    badgeClassName: 'border-sky-500/22 bg-sky-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  google: {
+    src: '/ai/providers/google.svg',
+    badgeClassName: 'border-sky-500/22 bg-sky-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  ollama: {
+    src: '/ai/providers/ollama.svg',
+    badgeClassName: 'border-violet-500/22 bg-violet-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  openrouter: {
+    src: '/ai/providers/openrouter.svg',
+    badgeClassName: 'border-fuchsia-500/22 bg-fuchsia-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  zed: {
+    src: '/ai/agents/zed.svg',
+    badgeClassName: 'border-cyan-500/22 bg-cyan-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  atom: {
+    src: '/ai/agents/atom.svg',
+    badgeClassName: 'border-amber-500/18 bg-amber-500/10',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert opacity-90',
+  },
+  terminal: {
+    src: '/ai/agents/terminal.svg',
+    badgeClassName: 'border-white/8 bg-white/[0.04]',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert opacity-90',
+  },
+  plus: {
+    src: '/ai/agents/plus.svg',
+    badgeClassName: 'border-white/8 bg-white/[0.04]',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert opacity-85',
+  },
+};
+
+function normalizeToken(value?: string): string {
+  return (value ?? '').toLowerCase().replace(/[^a-z0-9]+/g, '');
+}
+
+function getAgentIconKey(agent: AgentLike | 'add-more'): AgentIconKey {
+  if (agent === 'add-more') {
+    return 'plus';
+  }
+
+  if (agent.type === 'builtin') {
+    return 'catty';
+  }
+
+  const tokens = [
+    normalizeToken(agent.icon),
+    normalizeToken(agent.command),
+    normalizeToken(agent.name),
+    normalizeToken(agent.id),
+  ].filter(Boolean);
+
+  if (tokens.some((token) => token.includes('claude'))) {
+    return 'claude';
+  }
+  if (tokens.some((token) => token.includes('anthropic'))) {
+    return 'anthropic';
+  }
+  if (
+    tokens.some(
+      (token) =>
+        token.includes('codex') ||
+        token.includes('openai') ||
+        token.includes('chatgpt'),
+    )
+  ) {
+    return 'openai';
+  }
+  if (
+    tokens.some(
+      (token) =>
+        token.includes('gemini') ||
+        token.includes('google') ||
+        token.includes('googlegemini'),
+    )
+  ) {
+    return 'gemini';
+  }
+  if (tokens.some((token) => token.includes('ollama'))) {
+    return 'ollama';
+  }
+  if (tokens.some((token) => token.includes('openrouter'))) {
+    return 'openrouter';
+  }
+  if (tokens.some((token) => token.includes('zed'))) {
+    return 'zed';
+  }
+  if (tokens.some((token) => token.includes('factory'))) {
+    return 'atom';
+  }
+
+  return 'terminal';
+}
+
+export function getAgentCommandLabel(agent: AgentLike): string | undefined {
+  if (agent.type === 'builtin') {
+    return 'Built-in terminal assistant';
+  }
+  return agent.command ? `CLI: ${agent.command}` : 'External CLI agent';
+}
+
+export const AgentIconBadge: React.FC<{
+  agent: AgentLike | 'add-more';
+  size?: 'xs' | 'sm' | 'md' | 'lg';
+  variant?: 'plain' | 'badge';
+  className?: string;
+}> = ({ agent, size = 'md', variant = 'badge', className }) => {
+  const visual = AGENT_ICON_VISUALS[getAgentIconKey(agent)];
+  const badgeSize =
+    size === 'xs'
+      ? 'h-4 w-4 rounded-sm'
+      : size === 'sm'
+        ? 'h-7 w-7 rounded-lg'
+        : size === 'lg'
+          ? 'h-10 w-10 rounded-xl'
+          : 'h-8 w-8 rounded-lg';
+  const imageSize =
+    size === 'xs'
+      ? 'h-3.5 w-3.5'
+      : size === 'sm'
+        ? 'h-3.5 w-3.5'
+        : size === 'lg'
+          ? 'h-5 w-5'
+          : 'h-4 w-4';
+
+  if (variant === 'plain') {
+    return (
+      <img
+        src={visual.src}
+        alt=""
+        aria-hidden="true"
+        draggable={false}
+        className={cn('shrink-0', imageSize, visual.imageClassName, className)}
+      />
+    );
+  }
+
+  return (
+    <div
+      className={cn(
+        'flex shrink-0 items-center justify-center overflow-hidden border',
+        badgeSize,
+        visual.badgeClassName,
+        className,
+      )}
+    >
+      <img
+        src={visual.src}
+        alt=""
+        aria-hidden="true"
+        draggable={false}
+        className={cn(imageSize, visual.imageClassName)}
+      />
+    </div>
+  );
+};
+
+export default AgentIconBadge;

components/ai/AgentSelector.tsx

@@ -0,0 +1,280 @@
+/**
+ * AgentSelector - Dropdown for switching between AI agents
+ *
+ * Dark, grouped agent menu with local SVG branding for built-in,
+ * discovered, and external agents.
+ */
+
+import { ChevronDown, RefreshCw, Plus, Settings } from 'lucide-react';
+import React, { useCallback, useMemo, useState } from 'react';
+import { cn } from '../../lib/utils';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import type { AgentInfo, ExternalAgentConfig, DiscoveredAgent } from '../../infrastructure/ai/types';
+import AgentIconBadge from './AgentIconBadge';
+import {
+  Dropdown,
+  DropdownContent,
+  DropdownTrigger,
+} from '../ui/dropdown';
+
+interface AgentSelectorProps {
+  currentAgentId: string;
+  externalAgents: ExternalAgentConfig[];
+  discoveredAgents?: DiscoveredAgent[];
+  isDiscovering?: boolean;
+  onSelectAgent: (agentId: string) => void;
+  onEnableDiscoveredAgent?: (agent: DiscoveredAgent) => void;
+  onRediscover?: () => void;
+  onManageAgents?: () => void;
+}
+
+const BUILTIN_AGENTS: AgentInfo[] = [
+  {
+    id: 'catty',
+    name: 'Catty Agent',
+    type: 'builtin',
+    description: 'Built-in terminal assistant',
+    available: true,
+  },
+];
+
+const SectionLabel: React.FC<{ children: React.ReactNode; action?: React.ReactNode }> = ({ children, action }) => (
+  <div className="px-4 pb-2 pt-2 flex items-center justify-between">
+    <span className="text-[10px] font-medium tracking-wide text-muted-foreground/52">
+      {children}
+    </span>
+    {action}
+  </div>
+);
+
+const AgentMenuRow: React.FC<{
+  agent: AgentInfo;
+  isActive?: boolean;
+  subtitle?: string;
+  onClick: () => void;
+}> = ({ agent, isActive, subtitle, onClick }) => {
+  return (
+    <button
+      onClick={onClick}
+      className={cn(
+        'flex h-10 w-full items-center gap-3 px-4 text-left text-[13px] text-foreground/86 transition-colors cursor-pointer hover:bg-muted focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-primary/30',
+        isActive && 'bg-muted',
+      )}
+    >
+      <AgentIconBadge agent={agent} size="xs" variant="plain" className="opacity-78" />
+      <div className="min-w-0 flex-1">
+        <span className="block truncate">{agent.name}</span>
+        {subtitle && (
+          <span className="block truncate text-[10px] text-muted-foreground/40">{subtitle}</span>
+        )}
+      </div>
+    </button>
+  );
+};
+
+const DiscoveredAgentRow: React.FC<{
+  agent: DiscoveredAgent;
+  onEnable: () => void;
+}> = ({ agent, onEnable }) => {
+  const agentLike: AgentInfo = {
+    id: `discovered_${agent.command}`,
+    name: agent.name,
+    type: 'external',
+    icon: agent.icon,
+    command: agent.command,
+    available: true,
+  };
+
+  return (
+    <div className="flex h-10 w-full items-center gap-3 rounded-md px-4 text-[13px]">
+      <AgentIconBadge agent={agentLike} size="xs" variant="plain" className="opacity-78" />
+      <div className="min-w-0 flex-1">
+        <span className="block truncate text-foreground/86">{agent.name}</span>
+        <span className="block truncate text-[10px] text-muted-foreground/40">
+          {agent.version || agent.path}
+        </span>
+      </div>
+      <button
+        onClick={onEnable}
+        className="shrink-0 rounded-md px-2 py-0.5 text-[11px] font-medium text-primary/80 hover:bg-primary/10 hover:text-primary transition-colors cursor-pointer"
+        title={`Enable ${agent.name}`}
+      >
+        <Plus size={12} />
+      </button>
+    </div>
+  );
+};
+
+const AgentSelector: React.FC<AgentSelectorProps> = ({
+  currentAgentId,
+  externalAgents,
+  discoveredAgents = [],
+  isDiscovering = false,
+  onSelectAgent,
+  onEnableDiscoveredAgent,
+  onRediscover,
+  onManageAgents,
+}) => {
+  const { t } = useI18n();
+  const [open, setOpen] = useState(false);
+
+  const enabledExternalAgents = useMemo(
+    () =>
+      externalAgents
+        .filter((agent) => agent.enabled)
+        .map(
+          (agent): AgentInfo => ({
+            id: agent.id,
+            name: agent.name,
+            type: 'external',
+            icon: agent.icon,
+            command: agent.command,
+            args: agent.args,
+            available: true,
+          }),
+        ),
+    [externalAgents],
+  );
+
+  // Discovered agents not yet added to external agents
+  const unconfiguredDiscovered = useMemo(
+    () =>
+      discoveredAgents.filter(
+        (da) => !externalAgents.some((ea) => ea.command === da.command || ea.command === da.path),
+      ),
+    [discoveredAgents, externalAgents],
+  );
+
+  const allAgents = useMemo(
+    () => [...BUILTIN_AGENTS, ...enabledExternalAgents],
+    [enabledExternalAgents],
+  );
+
+  const currentAgent = useMemo(
+    () => allAgents.find((agent) => agent.id === currentAgentId) ?? BUILTIN_AGENTS[0],
+    [allAgents, currentAgentId],
+  );
+
+  const handleSelect = useCallback(
+    (agentId: string) => {
+      onSelectAgent(agentId);
+      setOpen(false);
+    },
+    [onSelectAgent],
+  );
+
+  const handleEnableDiscovered = useCallback(
+    (agent: DiscoveredAgent) => {
+      onEnableDiscoveredAgent?.(agent);
+      // After enabling, auto-select it
+      const agentId = `discovered_${agent.command}`;
+      onSelectAgent(agentId);
+      setOpen(false);
+    },
+    [onEnableDiscoveredAgent, onSelectAgent],
+  );
+
+  const handleManageAgents = useCallback(() => {
+    setOpen(false);
+    onManageAgents?.();
+  }, [onManageAgents]);
+
+  return (
+    <Dropdown open={open} onOpenChange={setOpen}>
+      <DropdownTrigger asChild>
+        <button
+          type="button"
+          className="group flex h-8 min-w-0 max-w-[170px] items-center gap-2 rounded-md px-2 text-left transition-colors hover:bg-muted focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-primary/28"
+        >
+          <AgentIconBadge
+            agent={currentAgent}
+            size="xs"
+            variant="plain"
+            className="opacity-78"
+          />
+          <span className="min-w-0 flex-1 truncate text-[13px] font-medium text-foreground/90">
+            {currentAgent.name}
+          </span>
+          <ChevronDown
+            size={12}
+            className={cn(
+              'shrink-0 text-muted-foreground/60 transition-transform',
+              open && 'rotate-180',
+            )}
+          />
+        </button>
+      </DropdownTrigger>
+
+      <DropdownContent
+        align="start"
+        sideOffset={6}
+        className="w-[288px] rounded-2xl border border-border/50 bg-popover p-0 text-foreground shadow-lg supports-[backdrop-filter]:backdrop-blur-xl"
+      >
+        {BUILTIN_AGENTS.map((agent) => (
+          <AgentMenuRow
+            key={agent.id}
+            agent={agent}
+            isActive={currentAgentId === agent.id}
+            onClick={() => handleSelect(agent.id)}
+          />
+        ))}
+
+        {enabledExternalAgents.length > 0 && (
+          <>
+            <div className="mx-0 my-1 border-t border-border/50" />
+            <SectionLabel>{t('ai.chat.agents')}</SectionLabel>
+            {enabledExternalAgents.map((agent) => (
+              <AgentMenuRow
+                key={agent.id}
+                agent={agent}
+                isActive={currentAgentId === agent.id}
+                subtitle={agent.command}
+                onClick={() => handleSelect(agent.id)}
+              />
+            ))}
+          </>
+        )}
+
+        {unconfiguredDiscovered.length > 0 && (
+          <>
+            <div className="mx-0 my-1 border-t border-border/50" />
+            <SectionLabel
+              action={
+                onRediscover && (
+                  <button
+                    onClick={onRediscover}
+                    disabled={isDiscovering}
+                    className="text-[10px] text-muted-foreground/40 hover:text-muted-foreground/70 transition-colors cursor-pointer disabled:opacity-50"
+                    title={t('ai.chat.rescan')}
+                  >
+                    <RefreshCw size={10} className={cn(isDiscovering && 'animate-spin')} />
+                  </button>
+                )
+              }
+            >
+              {t('ai.chat.detectedOnMachine')}
+            </SectionLabel>
+            {unconfiguredDiscovered.map((agent) => (
+              <DiscoveredAgentRow
+                key={agent.command}
+                agent={agent}
+                onEnable={() => handleEnableDiscovered(agent)}
+              />
+            ))}
+          </>
+        )}
+
+        <div className="mx-0 my-1 border-t border-border/50" />
+        <button
+          onClick={handleManageAgents}
+          className="flex h-10 w-full items-center gap-3 px-4 text-left text-[13px] text-foreground/82 transition-colors cursor-pointer hover:bg-muted focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-primary/30"
+        >
+          <Settings size={16} className="opacity-72 shrink-0" />
+          <span className="min-w-0 flex-1 truncate">{t('ai.agentSettings')}</span>
+        </button>
+      </DropdownContent>
+    </Dropdown>
+  );
+};
+
+export default React.memo(AgentSelector);

components/ai/ChatInput.tsx

@@ -0,0 +1,559 @@
+/**
+ * ChatInput - Zed-style bottom input area for the AI chat panel
+ *
+ * Thin wrapper around the AI Elements prompt-input components.
+ * Bordered textarea with monospace placeholder, expand toggle,
+ * and a bottom toolbar with muted controls + subtle send button.
+ */
+
+import { AtSign, Check, ChevronDown, ChevronRight, Cpu, Expand, Eye, FileText, ImageIcon, Plus, ShieldCheck, X, Zap } from 'lucide-react';
+import React, { useCallback, useRef, useState } from 'react';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import { createPortal } from 'react-dom';
+import type { FormEvent } from 'react';
+import type { UploadedImage } from '../../application/state/useImageUpload';
+import {
+  PromptInput,
+  PromptInputFooter,
+  PromptInputSubmit,
+  PromptInputTextarea,
+  PromptInputTools,
+} from '../ai-elements/prompt-input';
+import type { PromptInputStatus } from '../ai-elements/prompt-input';
+import { formatThinkingLabel } from '../../infrastructure/ai/types';
+import type { AgentModelPreset, AIPermissionMode } from '../../infrastructure/ai/types';
+
+interface ChatInputProps {
+  value: string;
+  onChange: (value: string) => void;
+  onSend: () => void;
+  onStop?: () => void;
+  isStreaming?: boolean;
+  disabled?: boolean;
+  providerName?: string;
+  modelName?: string;
+  agentName?: string;
+  placeholder?: string;
+  /** Available model presets for the current agent */
+  modelPresets?: AgentModelPreset[];
+  /** Currently selected model ID */
+  selectedModelId?: string;
+  /** Callback when user selects a model */
+  onModelSelect?: (modelId: string) => void;
+  /** Attached images */
+  images?: UploadedImage[];
+  /** Callback to add images (paste/drop) */
+  onAddImages?: (files: File[]) => void;
+  /** Callback to remove an image */
+  onRemoveImage?: (id: string) => void;
+  /** Available hosts for @ mention */
+  hosts?: Array<{ sessionId: string; hostname: string; label: string; connected: boolean }>;
+  /** Permission mode (only shown for Catty Agent) */
+  permissionMode?: AIPermissionMode;
+  /** Callback when user changes permission mode */
+  onPermissionModeChange?: (mode: AIPermissionMode) => void;
+}
+
+const ChatInput: React.FC<ChatInputProps> = ({
+  value,
+  onChange,
+  onSend,
+  onStop,
+  isStreaming = false,
+  disabled = false,
+  providerName,
+  modelName,
+  agentName,
+  placeholder,
+  modelPresets = [],
+  selectedModelId,
+  onModelSelect,
+  images = [],
+  onAddImages,
+  onRemoveImage,
+  hosts = [],
+  permissionMode,
+  onPermissionModeChange,
+}) => {
+  const { t } = useI18n();
+  const [expanded, setExpanded] = useState(false);
+  // Consolidate menu state into a single discriminated union to prevent multiple menus open simultaneously
+  type ActiveMenu = 'model' | 'attach' | 'atMention' | 'perm' | null;
+  const [activeMenu, setActiveMenu] = useState<ActiveMenu>(null);
+  const [menuPos, setMenuPos] = useState<{ left: number; bottom: number } | null>(null);
+  const [hoveredModelId, setHoveredModelId] = useState<string | null>(null);
+  const [showHostSubmenu, setShowHostSubmenu] = useState(false);
+
+  // Derived booleans for readability
+  const showModelPicker = activeMenu === 'model';
+  const showAttachMenu = activeMenu === 'attach';
+  const showAtMention = activeMenu === 'atMention';
+  const showPermPicker = activeMenu === 'perm';
+
+  const closeAllMenus = useCallback(() => {
+    setActiveMenu(null);
+    setMenuPos(null);
+    setHoveredModelId(null);
+    setShowHostSubmenu(false);
+  }, []);
+  const textareaRef = useRef<HTMLTextAreaElement>(null);
+  const modelBtnRef = useRef<HTMLButtonElement>(null);
+  const permBtnRef = useRef<HTMLButtonElement>(null);
+  const attachBtnRef = useRef<HTMLButtonElement>(null);
+  const fileInputRef = useRef<HTMLInputElement>(null);
+
+  const handleInputChange = useCallback((newValue: string) => {
+    onChange(newValue);
+    // Detect if user just typed @
+    if (
+      hosts.length > 0 &&
+      newValue.length > value.length &&
+      newValue.endsWith('@')
+    ) {
+      // Position the popover near the textarea
+      const el = textareaRef.current;
+      if (el) {
+        const rect = el.getBoundingClientRect();
+        setMenuPos({ left: rect.left + 12, bottom: window.innerHeight - rect.top + 4 });
+      }
+      setActiveMenu('atMention');
+    } else if (showAtMention && !newValue.includes('@')) {
+      setActiveMenu(null);
+    }
+  }, [onChange, value, hosts.length, showAtMention]);
+
+  const handleSelectAtMention = useCallback((host: { label: string; hostname: string }) => {
+    // Replace the trailing @ with @hostname
+    const name = host.label || host.hostname;
+    const lastAt = value.lastIndexOf('@');
+    const newValue = lastAt >= 0
+      ? value.slice(0, lastAt) + `@${name} `
+      : value + `@${name} `;
+    onChange(newValue);
+    closeAllMenus();
+  }, [value, onChange, closeAllMenus]);
+
+  const handlePaste = useCallback((e: React.ClipboardEvent) => {
+    const files = Array.from(e.clipboardData.items)
+      .filter((item) => item.type.startsWith('image/'))
+      .map((item) => item.getAsFile())
+      .filter(Boolean) as File[];
+    if (files.length > 0) {
+      e.preventDefault();
+      onAddImages?.(files);
+    }
+  }, [onAddImages]);
+
+  const handleDrop = useCallback((e: React.DragEvent) => {
+    e.preventDefault();
+    const files = Array.from(e.dataTransfer.files).filter((f) => f.type.startsWith('image/'));
+    if (files.length > 0) {
+      onAddImages?.(files);
+    }
+  }, [onAddImages]);
+
+  const defaultPlaceholder = agentName
+    ? t('ai.chat.placeholder').replace('{agent}', agentName)
+    : t('ai.chat.placeholderDefault');
+
+  const handleSubmit = useCallback(
+    (_text: string, _event: FormEvent<HTMLFormElement>) => {
+      onSend();
+    },
+    [onSend],
+  );
+
+  const status: PromptInputStatus = isStreaming ? 'streaming' : 'idle';
+
+  // Permission mode chip removed — agents run in autonomous mode
+
+  // selectedModelId may be "model/thinking" for codex
+  const selectedBaseModelId = selectedModelId?.split('/')[0];
+  const selectedThinking = selectedModelId?.includes('/') ? selectedModelId.split('/')[1] : undefined;
+  const selectedPreset = modelPresets.find(m => m.id === selectedBaseModelId);
+  const modelLabel = selectedPreset
+    ? selectedPreset.name + (selectedThinking ? ` / ${formatThinkingLabel(selectedThinking)}` : '')
+    : modelName || providerName || t('ai.chat.noModel');
+  const hasModelPicker = modelPresets.length > 0 && onModelSelect;
+  const chipClassName =
+    'inline-flex h-6 items-center gap-1 rounded-full px-1.5 text-[10.5px] text-foreground/72';
+  const iconButtonClassName =
+    'h-6 w-6 rounded-full bg-transparent text-foreground/62 hover:bg-muted/24 hover:text-foreground';
+
+  return (
+    <div className="shrink-0 px-4 pb-4">
+      <PromptInput onSubmit={handleSubmit}>
+        {/* Image attachment chips */}
+        {images.length > 0 && (
+          <div className="flex gap-1.5 px-3 pt-2 pb-0.5 flex-wrap">
+            {images.map((img) => (
+              <div
+                key={img.id}
+                className="inline-flex items-center gap-1 h-6 pl-1.5 pr-1 rounded-md bg-muted/30 border border-border/30 text-[11px] text-foreground/70 group"
+              >
+                <ImageIcon size={11} className="text-muted-foreground/60 shrink-0" />
+                <span className="truncate max-w-[80px]">{img.filename}</span>
+                <button
+                  type="button"
+                  onClick={() => onRemoveImage?.(img.id)}
+                  className="h-3.5 w-3.5 rounded-sm flex items-center justify-center opacity-50 hover:opacity-100 hover:bg-muted/50 transition-opacity cursor-pointer"
+                >
+                  <X size={8} />
+                </button>
+              </div>
+            ))}
+          </div>
+        )}
+        {/* Hidden file input */}
+        <input
+          ref={fileInputRef}
+          type="file"
+          accept="image/*"
+          multiple
+          className="hidden"
+          onChange={(e) => {
+            if (e.target.files?.length) {
+              onAddImages?.(Array.from(e.target.files));
+              e.target.value = '';
+            }
+          }}
+        />
+
+        {/* Textarea with expand toggle */}
+        <div className="relative" onPaste={handlePaste} onDrop={handleDrop} onDragOver={(e) => e.preventDefault()}>
+          <PromptInputTextarea
+            ref={textareaRef}
+            value={value}
+            onChange={(e) => handleInputChange(e.target.value)}
+            placeholder={placeholder || defaultPlaceholder}
+            disabled={disabled || isStreaming}
+            className={expanded ? 'max-h-[220px]' : undefined}
+          />
+          <button
+            type="button"
+            onClick={() => setExpanded((e) => !e)}
+            className="absolute top-3.5 right-3 rounded-md p-1 text-muted-foreground/38 hover:text-muted-foreground/72 hover:bg-muted/25 transition-colors cursor-pointer"
+            title={expanded ? 'Collapse' : 'Expand'}
+          >
+            <Expand size={12} />
+          </button>
+        </div>
+
+        {/* @ mention popover */}
+        {showAtMention && hosts.length > 0 && menuPos && createPortal(
+          <>
+            <div className="fixed inset-0 z-[999]" onClick={closeAllMenus} />
+            <div
+              role="listbox"
+              aria-label="Mention host"
+              className="fixed z-[1000] min-w-[160px] rounded-lg border border-border/50 bg-popover shadow-lg py-1"
+              style={{ left: menuPos.left, bottom: menuPos.bottom }}
+            >
+              <div className="px-3 py-1 text-[10px] text-muted-foreground/40 tracking-wide">{t('ai.chat.menuHosts')}</div>
+              {hosts.map(host => (
+                <button
+                  key={host.sessionId}
+                  type="button"
+                  role="option"
+                  onClick={() => handleSelectAtMention(host)}
+                  className="w-full flex items-center gap-2 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                >
+                  <span className={`h-1.5 w-1.5 rounded-full shrink-0 ${host.connected ? 'bg-green-500' : 'bg-muted-foreground/30'}`} />
+                  <span className="text-foreground/85 truncate">{host.label || host.hostname}</span>
+                  {host.label && host.hostname !== host.label && (
+                    <span className="text-[10px] text-muted-foreground/40">{host.hostname}</span>
+                  )}
+                </button>
+              ))}
+            </div>
+          </>,
+          document.body,
+        )}
+
+        {/* Footer toolbar */}
+        <PromptInputFooter className="gap-1.5 border-t-0 bg-transparent px-3 pb-2 pt-0">
+          <PromptInputTools className="gap-1 flex-wrap">
+            <button
+              ref={attachBtnRef}
+              type="button"
+              onClick={() => {
+                if (!showAttachMenu) {
+                  const rect = attachBtnRef.current?.getBoundingClientRect();
+                  if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
+                  setActiveMenu('attach');
+                } else {
+                  closeAllMenus();
+                }
+              }}
+              className={iconButtonClassName}
+              title="Attach"
+              aria-label="Attach file"
+              aria-expanded={showAttachMenu}
+            >
+              <Plus size={13} />
+            </button>
+            {showAttachMenu && menuPos && createPortal(
+              <>
+                <div className="fixed inset-0 z-[999]" onClick={closeAllMenus} />
+                <div
+                  role="menu"
+                  className="fixed z-[1000] min-w-[170px] rounded-lg border border-border/50 bg-popover shadow-lg py-1"
+                  style={{ left: menuPos.left, bottom: menuPos.bottom }}
+                >
+                  <div className="px-3 py-1 text-[10px] text-muted-foreground/40 tracking-wide">{t('ai.chat.menuContext')}</div>
+                  <button
+                    type="button"
+                    role="menuitem"
+                    onClick={() => { fileInputRef.current?.setAttribute('accept', '*/*'); fileInputRef.current?.click(); closeAllMenus(); }}
+                    className="w-full flex items-center gap-2.5 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                  >
+                    <FileText size={13} className="text-muted-foreground/60" />
+                    <span className="text-foreground/85">{t('ai.chat.menuFiles')}</span>
+                  </button>
+                  <button
+                    type="button"
+                    role="menuitem"
+                    onClick={() => { fileInputRef.current?.setAttribute('accept', 'image/*'); fileInputRef.current?.click(); closeAllMenus(); }}
+                    className="w-full flex items-center gap-2.5 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                  >
+                    <ImageIcon size={13} className="text-muted-foreground/60" />
+                    <span className="text-foreground/85">{t('ai.chat.menuImage')}</span>
+                  </button>
+                  <div
+                    className="relative"
+                    onMouseEnter={() => setShowHostSubmenu(true)}
+                    onMouseLeave={() => setShowHostSubmenu(false)}
+                    onFocus={() => setShowHostSubmenu(true)}
+                    onBlur={(e) => { if (!e.currentTarget.contains(e.relatedTarget)) setShowHostSubmenu(false); }}
+                  >
+                    <button
+                      type="button"
+                      role="menuitem"
+                      aria-label="Mention host"
+                      aria-expanded={showHostSubmenu && hosts.length > 0}
+                      className="w-full flex items-center gap-2.5 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                    >
+                      <AtSign size={13} className="text-muted-foreground/60" />
+                      <span className="flex-1 text-foreground/85">{t('ai.chat.menuMentionHost')}</span>
+                      {hosts.length > 0 && <ChevronRight size={10} className="text-muted-foreground/50" />}
+                    </button>
+                    {showHostSubmenu && hosts.length > 0 && (
+                      <div role="menu" className="absolute left-full top-0 ml-1 min-w-[160px] rounded-lg border border-border/50 bg-popover shadow-lg py-1 z-[1001]">
+                        {hosts.map(host => (
+                          <button
+                            key={host.sessionId}
+                            type="button"
+                            role="menuitem"
+                            onClick={() => {
+                              const mention = `@${host.label || host.hostname} `;
+                              onChange(value + mention);
+                              closeAllMenus();
+                            }}
+                            className="w-full flex items-center gap-2 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                          >
+                            <span className={`h-1.5 w-1.5 rounded-full shrink-0 ${host.connected ? 'bg-green-500' : 'bg-muted-foreground/30'}`} />
+                            <span className="text-foreground/85 truncate">{host.label || host.hostname}</span>
+                            {host.label && host.hostname !== host.label && (
+                              <span className="text-[10px] text-muted-foreground/40">{host.hostname}</span>
+                            )}
+                          </button>
+                        ))}
+                      </div>
+                    )}
+                  </div>
+                </div>
+              </>,
+              document.body,
+            )}
+            <button
+              ref={modelBtnRef}
+              type="button"
+              onClick={() => {
+                if (!hasModelPicker) return;
+                if (!showModelPicker) {
+                  const rect = modelBtnRef.current?.getBoundingClientRect();
+                  if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
+                  setActiveMenu('model');
+                } else {
+                  closeAllMenus();
+                }
+              }}
+              className={`${chipClassName} ${hasModelPicker ? 'cursor-pointer hover:bg-muted/24 transition-colors' : ''}`}
+              aria-label="Select model"
+              aria-expanded={showModelPicker}
+            >
+              <Cpu size={11} className="text-muted-foreground/64" />
+              <span className="truncate max-w-[82px]">{modelLabel}</span>
+              {hasModelPicker && <ChevronDown size={9} className="text-muted-foreground/50" />}
+            </button>
+            {showModelPicker && hasModelPicker && menuPos && createPortal(
+              <>
+                <div className="fixed inset-0 z-[999]" onClick={closeAllMenus} />
+                <div
+                  role="listbox"
+                  aria-label="Select model"
+                  className="fixed z-[1000] min-w-[160px] rounded-lg border border-border/50 bg-popover shadow-lg py-1"
+                  style={{ left: menuPos.left, bottom: menuPos.bottom }}
+                  onMouseLeave={() => setHoveredModelId(null)}
+                >
+                  {modelPresets.map(preset => {
+                    const isSelected = preset.id === selectedBaseModelId;
+                    const hasThinking = preset.thinkingLevels && preset.thinkingLevels.length > 0;
+                    return (
+                      <div
+                        key={preset.id}
+                        className="relative"
+                        onMouseEnter={() => setHoveredModelId(hasThinking ? preset.id : null)}
+                        onFocus={() => { if (hasThinking) setHoveredModelId(preset.id); }}
+                        onBlur={(e) => { if (!e.currentTarget.contains(e.relatedTarget)) setHoveredModelId(null); }}
+                      >
+                        <button
+                          type="button"
+                          role="option"
+                          aria-selected={isSelected}
+                          onClick={() => {
+                            if (!hasThinking) {
+                              onModelSelect?.(preset.id);
+                              closeAllMenus();
+                            }
+                          }}
+                          className="w-full flex items-center gap-1.5 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                        >
+                          {isSelected ? <Check size={11} className="text-primary shrink-0" /> : <span className="w-[11px] shrink-0" />}
+                          <span className="flex-1 text-foreground/85">{preset.name}</span>
+                          {preset.description && <span className="text-[10px] text-muted-foreground/50 mr-1">{preset.description}</span>}
+                          {hasThinking && <ChevronRight size={10} className="text-muted-foreground/50" />}
+                        </button>
+                        {/* Thinking level sub-menu */}
+                        {hasThinking && hoveredModelId === preset.id && (
+                          <div role="listbox" aria-label="Thinking level" className="absolute left-full top-0 ml-1 min-w-[120px] rounded-lg border border-border/50 bg-popover shadow-lg py-1 z-[1001]">
+                            {preset.thinkingLevels!.map(level => {
+                              const fullId = `${preset.id}/${level}`;
+                              const isLevelSelected = selectedModelId === fullId;
+                              return (
+                                <button
+                                  key={level}
+                                  type="button"
+                                  role="option"
+                                  aria-selected={isLevelSelected}
+                                  tabIndex={0}
+                                  onClick={() => {
+                                    onModelSelect?.(fullId);
+                                    closeAllMenus();
+                                  }}
+                                  onKeyDown={(e) => {
+                                    if (e.key === 'Enter' || e.key === ' ') {
+                                      e.preventDefault();
+                                      onModelSelect?.(fullId);
+                                      closeAllMenus();
+                                    } else if (e.key === 'Escape') {
+                                      e.preventDefault();
+                                      closeAllMenus();
+                                    }
+                                  }}
+                                  className="w-full flex items-center gap-1.5 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                                >
+                                  {isLevelSelected ? <Check size={11} className="text-primary shrink-0" /> : <span className="w-[11px] shrink-0" />}
+                                  <span className="text-foreground/85">{formatThinkingLabel(level)}</span>
+                                </button>
+                              );
+                            })}
+                          </div>
+                        )}
+                      </div>
+                    );
+                  })}
+                </div>
+              </>,
+              document.body,
+            )}
+            {/* Permission mode chip — only for Catty Agent */}
+            {permissionMode && onPermissionModeChange && (
+              <>
+                <button
+                  ref={permBtnRef}
+                  type="button"
+                  onClick={() => {
+                    if (!showPermPicker) {
+                      const rect = permBtnRef.current?.getBoundingClientRect();
+                      if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
+                      setActiveMenu('perm');
+                    } else {
+                      closeAllMenus();
+                    }
+                  }}
+                  className={`${chipClassName} cursor-pointer hover:bg-muted/24 transition-colors`}
+                  title={t('ai.safety.permissionMode')}
+                  aria-label="Permission mode"
+                  aria-expanded={showPermPicker}
+                >
+                  {permissionMode === 'observer' && <Eye size={11} className="text-blue-400/70" />}
+                  {permissionMode === 'confirm' && <ShieldCheck size={11} className="text-yellow-400/70" />}
+                  {permissionMode === 'autonomous' && <Zap size={11} className="text-green-400/70" />}
+                  <span className="truncate max-w-[72px]">
+                    {permissionMode === 'observer' && t('ai.chat.permObserver')}
+                    {permissionMode === 'confirm' && t('ai.chat.permConfirm')}
+                    {permissionMode === 'autonomous' && t('ai.chat.permAuto')}
+                  </span>
+                  <ChevronDown size={9} className="text-muted-foreground/50" />
+                </button>
+                {showPermPicker && menuPos && createPortal(
+                  <>
+                    <div className="fixed inset-0 z-[999]" onClick={closeAllMenus} />
+                    <div
+                      role="listbox"
+                      aria-label="Permission mode"
+                      className="fixed z-[1000] min-w-[180px] rounded-lg border border-border/50 bg-popover shadow-lg py-1"
+                      style={{ left: menuPos.left, bottom: menuPos.bottom }}
+                    >
+                      {([
+                        { mode: 'autonomous' as const, icon: Zap, color: 'text-green-400/70', label: t('ai.chat.permAuto'), desc: t('ai.chat.permAutoDesc') },
+                        { mode: 'confirm' as const, icon: ShieldCheck, color: 'text-yellow-400/70', label: t('ai.chat.permConfirm'), desc: t('ai.chat.permConfirmDesc') },
+                        { mode: 'observer' as const, icon: Eye, color: 'text-blue-400/70', label: t('ai.chat.permObserver'), desc: t('ai.chat.permObserverDesc') },
+                      ]).map(({ mode, icon: Icon, color, label, desc }) => (
+                        <button
+                          key={mode}
+                          type="button"
+                          role="option"
+                          aria-selected={permissionMode === mode}
+                          onClick={() => {
+                            onPermissionModeChange(mode);
+                            closeAllMenus();
+                          }}
+                          className="w-full flex items-center gap-2 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer"
+                        >
+                          {permissionMode === mode
+                            ? <Check size={11} className="text-primary shrink-0" />
+                            : <span className="w-[11px] shrink-0" />
+                          }
+                          <Icon size={12} className={`${color} shrink-0`} />
+                          <div className="flex-1 min-w-0">
+                            <div className="text-foreground/85">{label}</div>
+                            <div className="text-[10px] text-muted-foreground/40 leading-tight">{desc}</div>
+                          </div>
+                        </button>
+                      ))}
+                    </div>
+                  </>,
+                  document.body,
+                )}
+              </>
+            )}
+          </PromptInputTools>
+
+          <div className="flex-1 min-w-0" />
+
+          <div className="flex items-center gap-1">
+            <PromptInputSubmit
+              status={status}
+              onStop={onStop}
+              disabled={!value.trim() || disabled}
+            />
+          </div>
+        </PromptInputFooter>
+      </PromptInput>
+    </div>
+  );
+};
+
+export default React.memo(ChatInput);

components/ai/ChatMessageList.tsx

@@ -0,0 +1,196 @@
+/**
+ * ChatMessageList - Renders the list of chat messages
+ *
+ * Claude-Code-style: user messages in bordered bubbles (right-aligned),
+ * assistant responses as plain text (left-aligned, no border/bg).
+ * No avatars. Thinking blocks are collapsible.
+ */
+
+import { AlertCircle } from 'lucide-react';
+import React from 'react';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import type { ChatMessage } from '../../infrastructure/ai/types';
+import {
+  Conversation,
+  ConversationContent,
+  ConversationScrollButton,
+} from '../ai-elements/conversation';
+import { Message, MessageContent, MessageResponse } from '../ai-elements/message';
+import { ToolCall } from '../ai-elements/tool-call';
+import { InlineApprovalCard } from './InlineApprovalCard';
+import ThinkingBlock from './ThinkingBlock';
+
+interface ChatMessageListProps {
+  messages: ChatMessage[];
+  isStreaming?: boolean;
+  onApprove?: (messageId: string) => void;
+  onReject?: (messageId: string) => void;
+}
+
+const ChatMessageList: React.FC<ChatMessageListProps> = ({ messages, isStreaming, onApprove, onReject }) => {
+  const { t } = useI18n();
+  const visibleMessages = messages.filter(m => m.role !== 'system');
+
+  if (visibleMessages.length === 0 && !isStreaming) {
+    return (
+      <div className="flex-1 flex items-center justify-center px-6">
+        <p className="text-[13px] text-muted-foreground/40 text-center">
+          {t('ai.chat.emptyHint')}
+        </p>
+      </div>
+    );
+  }
+
+  const lastAssistantMessage = visibleMessages.findLast(m => m.role === 'assistant');
+
+  return (
+    <Conversation className="flex-1">
+      <ConversationContent className="gap-1.5 px-4 py-2">
+        {visibleMessages.map((message) => {
+          if (message.role === 'tool') {
+            return (
+              <React.Fragment key={message.id}>
+                {message.toolResults?.map((tr) => (
+                  <ToolCall
+                    key={tr.toolCallId}
+                    name={tr.toolCallId}
+                    result={tr.content}
+                    isError={tr.isError}
+                  />
+                ))}
+              </React.Fragment>
+            );
+          }
+
+          const isUser = message.role === 'user';
+          const isLastAssistant = message === lastAssistantMessage;
+          const isThisStreaming = isStreaming && isLastAssistant;
+
+          return (
+            <Message key={message.id} from={message.role}>
+              <MessageContent>
+                {/* Thinking block */}
+                {!isUser && message.thinking && (
+                  <ThinkingBlock
+                    content={message.thinking}
+                    isStreaming={!!isThisStreaming && !message.content}
+                    durationMs={message.thinkingDurationMs}
+                  />
+                )}
+
+                {/* User images */}
+                {isUser && message.images && message.images.length > 0 && (
+                  <div className="flex gap-1.5 flex-wrap mb-1">
+                    {message.images.map((img, i) => (
+                      <img
+                        key={img.filename ? `${img.filename}-${i}` : `img-${message.id}-${i}`}
+                        src={`data:${img.mediaType};base64,${img.base64Data}`}
+                        alt={img.filename || 'image'}
+                        className="max-h-[120px] max-w-[200px] rounded-md object-contain border border-border/20"
+                      />
+                    ))}
+                  </div>
+                )}
+
+                {message.content && (
+                  isUser
+                    ? <div className="whitespace-pre-wrap break-words text-[13px]">{message.content}</div>
+                    : <MessageResponse isAnimating={isThisStreaming}>
+                        {message.content}
+                      </MessageResponse>
+                )}
+
+                {/* Tool calls */}
+                {message.toolCalls?.map((tc) => (
+                  <ToolCall
+                    key={tc.id}
+                    name={tc.name}
+                    args={tc.arguments}
+                    isLoading={isThisStreaming && message.executionStatus === 'running'}
+                  />
+                ))}
+
+                {/* Inline approval card */}
+                {message.pendingApproval && (
+                  <InlineApprovalCard
+                    toolName={message.pendingApproval.toolName}
+                    toolArgs={message.pendingApproval.toolArgs}
+                    status={message.pendingApproval.status}
+                    onApprove={() => onApprove?.(message.id)}
+                    onReject={() => onReject?.(message.id)}
+                  />
+                )}
+
+                {/* Status text with shimmer */}
+                {message.statusText && (
+                  <div className="py-1">
+                    <span className="thinking-shimmer text-xs">{message.statusText}</span>
+                  </div>
+                )}
+
+                {/* Error info */}
+                {message.errorInfo && (
+                  <div className="flex items-start gap-2 px-3 py-2 rounded-md bg-destructive/10 border border-destructive/20 text-sm">
+                    <AlertCircle className="h-4 w-4 text-destructive shrink-0 mt-0.5" />
+                    <div className="flex-1 min-w-0">
+                      <p className="text-destructive font-medium">{message.errorInfo.message}</p>
+                      {message.errorInfo.retryable && (
+                        <p className="text-muted-foreground text-xs mt-1">{t('ai.chat.retryHint')}</p>
+                      )}
+                    </div>
+                  </div>
+                )}
+              </MessageContent>
+            </Message>
+          );
+        })}
+
+        {/* Streaming indicator — only when no content and no thinking yet */}
+        {isStreaming && !lastAssistantMessage?.content && !lastAssistantMessage?.thinking && (
+          <div className="flex items-center gap-1 py-2">
+            <span className="w-1.5 h-1.5 rounded-full bg-muted-foreground/30 animate-bounce [animation-delay:0ms]" />
+            <span className="w-1.5 h-1.5 rounded-full bg-muted-foreground/30 animate-bounce [animation-delay:150ms]" />
+            <span className="w-1.5 h-1.5 rounded-full bg-muted-foreground/30 animate-bounce [animation-delay:300ms]" />
+          </div>
+        )}
+      </ConversationContent>
+      <ConversationScrollButton />
+    </Conversation>
+  );
+};
+
+function areMessagesEqual(prev: ChatMessageListProps, next: ChatMessageListProps): boolean {
+  if (prev.isStreaming !== next.isStreaming) return false;
+  if (prev.onApprove !== next.onApprove) return false;
+  if (prev.onReject !== next.onReject) return false;
+  if (prev.messages.length !== next.messages.length) return false;
+  if (prev.messages === next.messages) return true;
+
+  // Shallow-compare each message by reference
+  for (let i = 0; i < prev.messages.length; i++) {
+    if (prev.messages[i] !== next.messages[i]) {
+      // For the last message during streaming, compare by content to avoid
+      // re-renders when only the array reference changed but content is the same
+      const p = prev.messages[i];
+      const n = next.messages[i];
+      if (
+        p.id !== n.id ||
+        p.content !== n.content ||
+        p.thinking !== n.thinking ||
+        p.role !== n.role ||
+        p.statusText !== n.statusText ||
+        p.executionStatus !== n.executionStatus ||
+        p.pendingApproval !== n.pendingApproval ||
+        p.errorInfo !== n.errorInfo ||
+        p.toolCalls !== n.toolCalls ||
+        p.toolResults !== n.toolResults
+      ) {
+        return false;
+      }
+    }
+  }
+
+  return true;
+}
+
+export default React.memo(ChatMessageList, areMessagesEqual);

components/ai/ConversationExport.tsx

@@ -0,0 +1,82 @@
+/**
+ * ConversationExport - Dropdown button for exporting chat sessions
+ *
+ * Small download icon button with a dropdown offering Markdown, JSON,
+ * and Plain Text export formats.
+ */
+
+import { Download, FileJson, FileText, FileType } from 'lucide-react';
+import React, { useCallback } from 'react';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import type { AISession } from '../../infrastructure/ai/types';
+import { Button } from '../ui/button';
+import {
+  Dropdown,
+  DropdownContent,
+  DropdownTrigger,
+} from '../ui/dropdown';
+
+interface ConversationExportProps {
+  session: AISession | null;
+  onExport: (format: 'md' | 'json' | 'txt') => void;
+  className?: string;
+}
+
+const EXPORT_OPTIONS = [
+  { format: 'md' as const, labelKey: 'ai.chat.exportMarkdown' as const, icon: FileText },
+  { format: 'json' as const, labelKey: 'ai.chat.exportJSON' as const, icon: FileJson },
+  { format: 'txt' as const, labelKey: 'ai.chat.exportPlainText' as const, icon: FileType },
+];
+
+const ConversationExport: React.FC<ConversationExportProps> = ({
+  session,
+  onExport,
+  className,
+}) => {
+  const { t } = useI18n();
+  const handleExport = useCallback(
+    (format: 'md' | 'json' | 'txt') => {
+      onExport(format);
+    },
+    [onExport],
+  );
+
+  const hasMessages = session && session.messages.length > 0;
+
+  return (
+    <Dropdown>
+      <DropdownTrigger asChild>
+        <Button
+          variant="ghost"
+          size="icon"
+          className={className ?? 'h-7 w-7 rounded-md text-muted-foreground/62 hover:bg-white/[0.05] hover:text-foreground'}
+          disabled={!hasMessages}
+          title={t('ai.chat.exportConversation')}
+        >
+          <Download size={14} />
+        </Button>
+      </DropdownTrigger>
+      <DropdownContent
+        align="end"
+        sideOffset={6}
+        className="w-40 rounded-xl border border-border/45 bg-[#111111]/98 p-1.5 text-foreground shadow-[0_20px_48px_rgba(0,0,0,0.48)] supports-[backdrop-filter]:bg-[#111111]/92 supports-[backdrop-filter]:backdrop-blur-xl"
+      >
+        <div className="px-2 py-1 text-[10px] font-medium uppercase tracking-[0.16em] text-muted-foreground/48">
+          {t('ai.chat.exportAs')}
+        </div>
+        {EXPORT_OPTIONS.map(({ format, labelKey, icon: Icon }) => (
+          <button
+            key={format}
+            onClick={() => handleExport(format)}
+            className="w-full flex items-center gap-2 px-2 py-1.5 text-[13px] rounded-lg transition-colors cursor-pointer hover:bg-white/[0.04]"
+          >
+            <Icon size={13} className="shrink-0 text-muted-foreground/70" />
+            <span>{t(labelKey)}</span>
+          </button>
+        ))}
+      </DropdownContent>
+    </Dropdown>
+  );
+};
+
+export default React.memo(ConversationExport);

components/ai/ExecutionPlan.tsx

@@ -0,0 +1,169 @@
+/**
+ * ExecutionPlan - Renders a multi-step execution plan for AI agent tasks.
+ *
+ * Shows a numbered list of steps with status indicators, host badges,
+ * optional command previews, and action buttons.
+ */
+
+import {
+  CheckCircle2,
+  Circle,
+  Loader2,
+  SkipForward,
+  XCircle,
+} from 'lucide-react';
+import React from 'react';
+import { cn } from '../../lib/utils';
+import { Badge } from '../ui/badge';
+import { Button } from '../ui/button';
+
+// -------------------------------------------------------------------
+// Types
+// -------------------------------------------------------------------
+
+interface ExecutionPlanStep {
+  description: string;
+  host?: string;
+  command?: string;
+  status: 'pending' | 'running' | 'completed' | 'failed' | 'skipped';
+}
+
+interface ExecutionPlanProps {
+  steps: ExecutionPlanStep[];
+  onApprove: () => void;
+  onModify: () => void;
+  onReject: () => void;
+  isExecuting: boolean;
+}
+
+// -------------------------------------------------------------------
+// Status icon mapping
+// -------------------------------------------------------------------
+
+function StepStatusIcon({
+  status,
+}: {
+  status: ExecutionPlanStep['status'];
+}) {
+  switch (status) {
+    case 'pending':
+      return <Circle size={16} className="text-muted-foreground" />;
+    case 'running':
+      return (
+        <Loader2 size={16} className="text-blue-500 animate-spin" />
+      );
+    case 'completed':
+      return <CheckCircle2 size={16} className="text-green-500" />;
+    case 'failed':
+      return <XCircle size={16} className="text-destructive" />;
+    case 'skipped':
+      return (
+        <SkipForward size={16} className="text-muted-foreground/60" />
+      );
+  }
+}
+
+// -------------------------------------------------------------------
+// Component
+// -------------------------------------------------------------------
+
+const ExecutionPlan: React.FC<ExecutionPlanProps> = ({
+  steps,
+  onApprove,
+  onModify,
+  onReject,
+  isExecuting,
+}) => {
+  return (
+    <div className="rounded-lg border border-border bg-muted/30 overflow-hidden">
+      {/* Header */}
+      <div className="px-3 py-2 border-b border-border/60 bg-muted/50">
+        <span className="text-sm font-medium">
+          Execution Plan ({steps.length} step{steps.length !== 1 ? 's' : ''})
+        </span>
+      </div>
+
+      {/* Steps list */}
+      <div className="divide-y divide-border/30">
+        {steps.map((step, index) => (
+          <div
+            key={index}
+            className={cn(
+              'flex items-start gap-3 px-3 py-2.5 transition-colors',
+              step.status === 'running' && 'bg-blue-500/5',
+              step.status === 'completed' && 'bg-green-500/5',
+              step.status === 'failed' && 'bg-destructive/5',
+              step.status === 'skipped' && 'opacity-50',
+            )}
+          >
+            {/* Step number + status icon */}
+            <div className="flex items-center gap-2 shrink-0 pt-0.5">
+              <span className="text-xs text-muted-foreground font-mono w-4 text-right">
+                {index + 1}
+              </span>
+              <StepStatusIcon status={step.status} />
+            </div>
+
+            {/* Step content */}
+            <div className="min-w-0 flex-1 space-y-1">
+              <div className="flex items-center gap-2 flex-wrap">
+                <span
+                  className={cn(
+                    'text-sm',
+                    step.status === 'skipped' && 'line-through',
+                  )}
+                >
+                  {step.description}
+                </span>
+                {step.host && (
+                  <Badge
+                    variant="outline"
+                    className="text-[10px] px-1.5 py-0"
+                  >
+                    {step.host}
+                  </Badge>
+                )}
+              </div>
+              {step.command && (
+                <code className="block text-xs font-mono bg-muted/80 px-2 py-1 rounded text-muted-foreground truncate">
+                  {step.command}
+                </code>
+              )}
+            </div>
+          </div>
+        ))}
+      </div>
+
+      {/* Action buttons */}
+      <div className="px-3 py-2.5 border-t border-border/60 flex items-center justify-end gap-2">
+        {isExecuting ? (
+          <Button
+            variant="destructive"
+            size="sm"
+            onClick={onReject}
+          >
+            Cancel
+          </Button>
+        ) : (
+          <>
+            <Button variant="ghost" size="sm" onClick={onReject}>
+              Cancel
+            </Button>
+            <Button variant="outline" size="sm" onClick={onModify}>
+              Modify Plan
+            </Button>
+            <Button size="sm" onClick={onApprove}>
+              Approve
+            </Button>
+          </>
+        )}
+      </div>
+    </div>
+  );
+};
+
+ExecutionPlan.displayName = 'ExecutionPlan';
+
+export default ExecutionPlan;
+export { ExecutionPlan };
+export type { ExecutionPlanProps, ExecutionPlanStep };

components/ai/InlineApprovalCard.tsx

@@ -0,0 +1,193 @@
+/**
+ * InlineApprovalCard - Inline tool approval card rendered within chat messages.
+ *
+ * Replaces the modal PermissionDialog. Shows tool name, arguments, and
+ * approve/reject buttons. Keyboard shortcuts: Enter to approve, Escape to reject.
+ */
+
+import { Check, ShieldAlert, X } from 'lucide-react';
+import React, { useCallback, useEffect, useRef, useState } from 'react';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import { Badge } from '../ui/badge';
+import { Button } from '../ui/button';
+
+interface InlineApprovalCardProps {
+  toolName: string;
+  toolArgs: Record<string, unknown>;
+  status: 'pending' | 'approved' | 'denied';
+  onApprove: () => void;
+  onReject: () => void;
+}
+
+const InlineApprovalCard: React.FC<InlineApprovalCardProps> = ({
+  toolName,
+  toolArgs,
+  status,
+  onApprove,
+  onReject,
+}) => {
+  const { t } = useI18n();
+  const cardRef = useRef<HTMLDivElement>(null);
+  const approveBtnRef = useRef<HTMLButtonElement>(null);
+  const isPending = status === 'pending';
+  const [responded, setResponded] = useState(false);
+
+  // Use refs to always access the latest callbacks without re-registering the listener
+  const onApproveRef = useRef(onApprove);
+  const onRejectRef = useRef(onReject);
+  onApproveRef.current = onApprove;
+  onRejectRef.current = onReject;
+
+  const isDisabled = !isPending || responded;
+
+  const handleApprove = useCallback(() => {
+    if (isDisabled) return;
+    setResponded(true);
+    onApproveRef.current();
+  }, [isDisabled]);
+
+  const handleReject = useCallback(() => {
+    if (isDisabled) return;
+    setResponded(true);
+    onRejectRef.current();
+  }, [isDisabled]);
+
+  // Keyboard shortcuts: handled via local onKeyDown on the focusable card element
+  // to avoid conflicts when multiple InlineApprovalCard instances exist simultaneously.
+  const handleKeyDown = useCallback((e: React.KeyboardEvent) => {
+    if (isDisabled) return;
+    if (e.key === 'Enter') {
+      e.preventDefault();
+      handleApprove();
+    } else if (e.key === 'Escape') {
+      e.preventDefault();
+      handleReject();
+    }
+  }, [isDisabled, handleApprove, handleReject]);
+
+  // Auto-focus approve button and auto-scroll into view when mounted as pending
+  useEffect(() => {
+    if (isPending && cardRef.current) {
+      cardRef.current.scrollIntoView({ behavior: 'smooth', block: 'end' });
+      approveBtnRef.current?.focus();
+    }
+  }, [isPending]);
+
+  let formattedArgs: string;
+  try {
+    formattedArgs = JSON.stringify(toolArgs, null, 2);
+  } catch {
+    formattedArgs = String(toolArgs);
+  }
+
+  // Extract target session info if present
+  const sessionId = toolArgs?.sessionId as string | undefined;
+
+  return (
+    <div
+      ref={cardRef}
+      tabIndex={0}
+      role="alertdialog"
+      aria-label="Tool execution approval required"
+      onKeyDown={handleKeyDown}
+      className={`rounded-md border overflow-hidden text-[12px] mt-1.5 outline-none ${
+        isPending
+          ? 'border-yellow-500/30 bg-yellow-500/[0.04]'
+          : status === 'approved'
+            ? 'border-green-500/20 bg-green-500/[0.03]'
+            : 'border-red-500/20 bg-red-500/[0.03]'
+      }`}
+    >
+      {/* Header */}
+      <div className="flex items-center gap-2 px-3 py-1.5">
+        <ShieldAlert
+          size={13}
+          className={
+            isPending
+              ? 'text-yellow-500/70 shrink-0'
+              : status === 'approved'
+                ? 'text-green-400/70 shrink-0'
+                : 'text-red-400/70 shrink-0'
+          }
+        />
+        <span className="text-[11px] font-medium text-foreground/70">
+          {t('ai.chat.toolApprovalTitle')}
+        </span>
+        {!isPending && (
+          <Badge
+            className={`ml-auto text-[10px] px-1.5 py-0 ${
+              status === 'approved'
+                ? 'bg-green-600/20 text-green-400 border-green-600/30'
+                : 'bg-red-600/20 text-red-400 border-red-600/30'
+            }`}
+          >
+            {status === 'approved' ? t('ai.chat.toolApproved') : t('ai.chat.toolDenied')}
+          </Badge>
+        )}
+      </div>
+
+      {/* Tool info */}
+      <div className="px-3 pb-2 space-y-1.5">
+        <div className="flex items-center gap-2">
+          <span className="text-[10px] text-muted-foreground/40 uppercase tracking-wider">{t('ai.chat.toolLabel')}</span>
+          <code className="text-[11px] font-mono text-muted-foreground/70 bg-muted/30 px-1.5 py-0.5 rounded">
+            {toolName}
+          </code>
+        </div>
+
+        {sessionId && (
+          <div className="flex items-center gap-2">
+            <span className="text-[10px] text-muted-foreground/40 uppercase tracking-wider">{t('ai.chat.targetLabel')}</span>
+            <code className="text-[11px] font-mono text-muted-foreground/50 bg-muted/30 px-1.5 py-0.5 rounded">
+              {sessionId}
+            </code>
+          </div>
+        )}
+
+        {/* Arguments */}
+        <div className="rounded border border-border/20 bg-muted/10 p-2 max-h-32 overflow-auto">
+          <pre className="text-[11px] font-mono whitespace-pre-wrap break-all text-muted-foreground/50">
+            {formattedArgs}
+          </pre>
+        </div>
+
+        {/* Actions or hint */}
+        {isPending && (
+          <div className="flex items-center justify-between pt-0.5">
+            <span className="text-[10px] text-muted-foreground/30">
+              {t('ai.chat.toolApprovalHint')}
+            </span>
+            <div className="flex items-center gap-1.5">
+              <Button
+                variant="outline"
+                size="sm"
+                disabled={responded}
+                className={`h-6 px-2 text-[11px] border-red-500/20 text-red-400/80 hover:bg-red-500/10 hover:text-red-400 ${responded ? 'opacity-50 cursor-not-allowed' : ''}`}
+                onClick={handleReject}
+              >
+                <X size={11} className="mr-0.5" />
+                {t('ai.chat.reject')}
+              </Button>
+              <Button
+                ref={approveBtnRef}
+                size="sm"
+                disabled={responded}
+                className={`h-6 px-2.5 text-[11px] bg-green-600/80 hover:bg-green-600 text-white ${responded ? 'opacity-50 cursor-not-allowed' : ''}`}
+                onClick={handleApprove}
+              >
+                <Check size={11} className="mr-0.5" />
+                {t('ai.chat.approve')}
+              </Button>
+            </div>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+};
+
+InlineApprovalCard.displayName = 'InlineApprovalCard';
+
+export default InlineApprovalCard;
+export { InlineApprovalCard };
+export type { InlineApprovalCardProps };

components/ai/PermissionDialog.tsx

@@ -0,0 +1,200 @@
+/**
+ * PermissionDialog - Modal for AI agent tool call permission requests.
+ *
+ * Shown when the agent needs user approval to execute a tool call.
+ * Displays tool name, arguments, recommendation, and approve/reject actions.
+ */
+
+import { ShieldAlert } from 'lucide-react';
+import React, { useCallback } from 'react';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import { cn } from '../../lib/utils';
+import { Badge } from '../ui/badge';
+import { Button } from '../ui/button';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '../ui/dialog';
+
+// -------------------------------------------------------------------
+// Types
+// -------------------------------------------------------------------
+
+interface PermissionDialogProps {
+  open: boolean;
+  toolCall: { name: string; arguments: Record<string, unknown> } | null;
+  recommendation: 'allow' | 'confirm' | 'deny';
+  onApprove: () => void;
+  onReject: () => void;
+  onDismiss: () => void;
+}
+
+// -------------------------------------------------------------------
+// Component
+// -------------------------------------------------------------------
+
+const PermissionDialog: React.FC<PermissionDialogProps> = ({
+  open,
+  toolCall,
+  recommendation,
+  onApprove,
+  onReject,
+  onDismiss,
+}) => {
+  const { t } = useI18n();
+  const isDenied = recommendation === 'deny';
+
+  // Keyboard shortcuts: Enter to approve, Escape to reject
+  const handleKeyDown = useCallback(
+    (e: React.KeyboardEvent) => {
+      if (e.key === 'Enter' && !isDenied) {
+        e.preventDefault();
+        onApprove();
+      } else if (e.key === 'Escape') {
+        e.preventDefault();
+        onReject();
+      }
+    },
+    [isDenied, onApprove, onReject],
+  );
+
+  // Format arguments as readable code block content
+  let formattedArgs = '';
+  if (toolCall) {
+    try {
+      formattedArgs = JSON.stringify(toolCall.arguments, null, 2);
+    } catch {
+      formattedArgs = String(toolCall.arguments);
+    }
+  }
+
+  // Extract host/session info from arguments if present
+  const sessionId =
+    toolCall?.arguments?.sessionId as string | undefined;
+  const sessionIds =
+    toolCall?.arguments?.sessionIds as string[] | undefined;
+
+  const recommendationBadge = () => {
+    switch (recommendation) {
+      case 'allow':
+        return (
+          <Badge className="bg-green-600/20 text-green-400 border-green-600/30">
+            {t('ai.chat.recommendAllow')}
+          </Badge>
+        );
+      case 'confirm':
+        return (
+          <Badge className="bg-yellow-600/20 text-yellow-400 border-yellow-600/30">
+            {t('ai.chat.recommendConfirm')}
+          </Badge>
+        );
+      case 'deny':
+        return <Badge variant="destructive">{t('ai.chat.recommendDeny')}</Badge>;
+    }
+  };
+
+  return (
+    <Dialog open={open} onOpenChange={(isOpen) => !isOpen && onDismiss()}>
+      <DialogContent hideCloseButton onKeyDown={handleKeyDown}>
+        <DialogHeader>
+          <DialogTitle className="flex items-center gap-2">
+            <ShieldAlert
+              size={20}
+              className={cn(
+                isDenied ? 'text-destructive' : 'text-yellow-500',
+              )}
+            />
+            {t('ai.chat.permissionRequired')}
+          </DialogTitle>
+          <DialogDescription>
+            {t('ai.chat.permissionDescription')}
+          </DialogDescription>
+        </DialogHeader>
+
+        {toolCall && (
+          <div className="space-y-3">
+            {/* Tool name and recommendation */}
+            <div className="flex items-center justify-between">
+              <div className="flex items-center gap-2">
+                <span className="text-sm text-muted-foreground">{t('ai.chat.toolLabel')}:</span>
+                <code className="text-sm font-mono bg-muted px-1.5 py-0.5 rounded">
+                  {toolCall.name}
+                </code>
+              </div>
+              {recommendationBadge()}
+            </div>
+
+            {/* Target session(s) */}
+            {(sessionId || sessionIds) && (
+              <div className="flex items-center gap-2">
+                <span className="text-sm text-muted-foreground">{t('ai.chat.targetLabel')}:</span>
+                {sessionId && (
+                  <code className="text-xs font-mono bg-muted px-1.5 py-0.5 rounded">
+                    {sessionId}
+                  </code>
+                )}
+                {sessionIds && (
+                  <div className="flex flex-wrap gap-1">
+                    {sessionIds.map((id) => (
+                      <code
+                        key={id}
+                        className="text-xs font-mono bg-muted px-1.5 py-0.5 rounded"
+                      >
+                        {id}
+                      </code>
+                    ))}
+                  </div>
+                )}
+              </div>
+            )}
+
+            {/* Arguments code block */}
+            <div className="rounded-md border border-border bg-muted/50 p-3 max-h-48 overflow-auto">
+              <pre className="text-xs font-mono whitespace-pre-wrap break-all text-foreground">
+                {formattedArgs}
+              </pre>
+            </div>
+
+            {/* Deny warning */}
+            {isDenied && (
+              <div className="rounded-md border border-destructive/30 bg-destructive/10 p-3">
+                <p className="text-sm text-destructive">
+                  {t('ai.chat.commandBlocked')}
+                </p>
+              </div>
+            )}
+          </div>
+        )}
+
+        <DialogFooter>
+          {isDenied ? (
+            <Button variant="destructive" onClick={onReject} className="w-full">
+              {t('ai.chat.reject')}
+            </Button>
+          ) : (
+            <>
+              <Button
+                variant="outline"
+                onClick={onReject}
+                className="border-destructive/30 text-destructive hover:bg-destructive/10"
+              >
+                {t('ai.chat.reject')}
+              </Button>
+              <Button onClick={onApprove}>{t('ai.chat.approve')}</Button>
+            </>
+          )}
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+};
+
+PermissionDialog.displayName = 'PermissionDialog';
+
+export default PermissionDialog;
+export { PermissionDialog };
+export type { PermissionDialogProps };

components/ai/ThinkingBlock.tsx

@@ -0,0 +1,138 @@
+/**
+ * ThinkingBlock - Collapsible thinking/reasoning display
+ *
+ * - While streaming: expanded, "Thinking" label with shimmer + elapsed time
+ * - When done: auto-collapses to "Thought for Xs", click to expand
+ * - Content area has max-height with scroll and top gradient fade
+ */
+
+import { ChevronRight } from 'lucide-react';
+import React, { useCallback, useEffect, useRef, useState } from 'react';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import { cn } from '../../lib/utils';
+
+interface ThinkingBlockProps {
+  content: string;
+  isStreaming: boolean;
+  durationMs?: number;
+}
+
+function formatDuration(ms: number): string {
+  const seconds = Math.floor(ms / 1000);
+  if (seconds < 60) return `${seconds}s`;
+  const minutes = Math.floor(seconds / 60);
+  const remaining = seconds % 60;
+  return `${minutes}m ${remaining}s`;
+}
+
+const ThinkingBlock: React.FC<ThinkingBlockProps> = ({
+  content,
+  isStreaming,
+  durationMs,
+}) => {
+  const { t } = useI18n();
+  const [isExpanded, setIsExpanded] = useState(isStreaming);
+  const [elapsed, setElapsed] = useState(0);
+  const wasStreamingRef = useRef(false);
+  const startRef = useRef(Date.now());
+  const scrollRef = useRef<HTMLDivElement>(null);
+
+  // Auto-collapse when streaming ends
+  useEffect(() => {
+    if (wasStreamingRef.current && !isStreaming) {
+      setIsExpanded(false);
+    }
+    wasStreamingRef.current = isStreaming;
+  }, [isStreaming]);
+
+  // Expand when streaming starts
+  useEffect(() => {
+    if (isStreaming) {
+      setIsExpanded(true);
+      startRef.current = Date.now();
+    }
+  }, [isStreaming]);
+
+  // Elapsed time ticker
+  useEffect(() => {
+    if (!isStreaming) return;
+    const timer = setInterval(() => {
+      setElapsed(Date.now() - startRef.current);
+    }, 1000);
+    return () => clearInterval(timer);
+  }, [isStreaming]);
+
+  // Auto-scroll to bottom while streaming
+  useEffect(() => {
+    if (isStreaming && isExpanded && scrollRef.current) {
+      scrollRef.current.scrollTop = scrollRef.current.scrollHeight;
+    }
+  }, [content, isStreaming, isExpanded]);
+
+  const toggle = useCallback(() => setIsExpanded(e => !e), []);
+
+  const displayDuration = durationMs || elapsed;
+  const preview = content.length > 60 ? content.slice(0, 60) + '…' : content;
+
+  return (
+    <div className="mb-0.5">
+      {/* Header */}
+      <button
+        onClick={toggle}
+        aria-expanded={isExpanded}
+        aria-controls="thinking-block-content"
+        className="group flex items-center gap-1.5 py-0.5 px-1 cursor-pointer text-left w-full rounded hover:bg-white/[0.03] transition-colors"
+      >
+        <ChevronRight
+          size={12}
+          className={cn(
+            'shrink-0 text-muted-foreground/50 transition-transform duration-200',
+            isExpanded && 'rotate-90',
+            !isExpanded && 'opacity-50',
+          )}
+        />
+        <span className="text-[12px] font-medium text-muted-foreground/70 whitespace-nowrap shrink-0">
+          {isStreaming ? (
+            <span className="thinking-shimmer">{t('ai.chat.thinking')}</span>
+          ) : (
+            displayDuration > 0
+              ? t('ai.chat.thoughtFor', { duration: formatDuration(displayDuration) })
+              : t('ai.chat.thought')
+          )}
+        </span>
+        {isStreaming && elapsed > 0 && (
+          <span className="text-[11px] text-muted-foreground/40 tabular-nums shrink-0">
+            {formatDuration(elapsed)}
+          </span>
+        )}
+        {!isExpanded && !isStreaming && preview && (
+          <span className="text-[11px] text-muted-foreground/40 truncate min-w-0">
+            {preview}
+          </span>
+        )}
+      </button>
+
+      {/* Content */}
+      {isExpanded && content && (
+        <div id="thinking-block-content" className="relative">
+          {/* Top gradient fade */}
+          {isStreaming && (
+            <div className="absolute inset-x-0 top-0 h-4 bg-gradient-to-b from-background to-transparent z-10 pointer-events-none" />
+          )}
+          <div
+            ref={scrollRef}
+            className={cn(
+              'px-5 text-[12px] text-muted-foreground/60 leading-relaxed whitespace-pre-wrap break-words',
+              isStreaming && 'overflow-y-auto scrollbar-hide max-h-36',
+              !isStreaming && 'max-h-36 overflow-y-auto scrollbar-hide',
+            )}
+          >
+            {content}
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default React.memo(ThinkingBlock);

components/ai/hooks/useAIChatStreaming.ts

@@ -0,0 +1,743 @@
+/**
+ * useAIChatStreaming — Encapsulates all streaming logic for the AI chat panel.
+ *
+ * Handles:
+ * - Catty agent streaming via Vercel AI SDK `streamText`
+ * - External agent streaming (ACP and raw process)
+ * - Text-delta batching via requestAnimationFrame
+ * - Abort controller management
+ * - Stream state tracking (per-session)
+ * - Error reporting
+ */
+
+import React, { useCallback, useRef, useState } from 'react';
+import { streamText, stepCountIs, type ModelMessage } from 'ai';
+import type {
+  AIPermissionMode,
+  AISession,
+  ChatMessage,
+  ExternalAgentConfig,
+  ProviderConfig,
+} from '../../../infrastructure/ai/types';
+import { buildSystemPrompt } from '../../../infrastructure/ai/cattyAgent/systemPrompt';
+import { createModelFromConfig } from '../../../infrastructure/ai/sdk/providers';
+import { createCattyTools } from '../../../infrastructure/ai/sdk/tools';
+import type { NetcattyBridge } from '../../../infrastructure/ai/cattyAgent/executor';
+import { runExternalAgentTurn } from '../../../infrastructure/ai/externalAgentAdapter';
+import { runAcpAgentTurn } from '../../../infrastructure/ai/acpAgentAdapter';
+import { classifyError, sanitizeErrorMessage } from '../../../infrastructure/ai/errorClassifier';
+
+// -------------------------------------------------------------------
+// Stream chunk type interfaces (Issue #13: replace unsafe casts)
+// -------------------------------------------------------------------
+
+/** Shape of a text/text-delta chunk from the Vercel AI SDK fullStream. */
+interface TextDeltaChunk {
+  type: 'text' | 'text-delta';
+  text?: string;
+  textDelta?: string;
+}
+
+/** Shape of a reasoning chunk from the Vercel AI SDK fullStream. */
+interface ReasoningChunk {
+  type: 'reasoning' | 'reasoning-start' | 'reasoning-delta';
+  text?: string;
+}
+
+/** Shape of a tool-call chunk from the Vercel AI SDK fullStream. */
+interface ToolCallChunk {
+  type: 'tool-call';
+  toolCallId: string;
+  toolName: string;
+  input?: unknown;
+  args?: unknown;
+}
+
+/** Shape of a tool-result chunk from the Vercel AI SDK fullStream. */
+interface ToolResultChunk {
+  type: 'tool-result';
+  toolCallId: string;
+  output?: unknown;
+  result?: unknown;
+}
+
+/** Shape of a tool-approval-request chunk from the Vercel AI SDK fullStream. */
+interface ToolApprovalRequestChunk {
+  type: 'tool-approval-request';
+  approvalId: string;
+  toolCall: {
+    toolCallId: string;
+    toolName: string;
+    args?: Record<string, unknown>;
+    input?: Record<string, unknown>;
+  };
+}
+
+/** Shape of an error chunk from the Vercel AI SDK fullStream. */
+interface ErrorChunk {
+  type: 'error';
+  error: unknown;
+}
+
+/** Union of all stream chunk shapes we handle. */
+type StreamChunk =
+  | TextDeltaChunk
+  | ReasoningChunk
+  | ToolCallChunk
+  | ToolResultChunk
+  | ToolApprovalRequestChunk
+  | ErrorChunk
+  | { type: 'reasoning-end' | 'text-start' | 'text-end' | 'start' | 'finish' | 'start-step' | 'finish-step' };
+
+/** Shape of the netcatty bridge exposed on `window` (panel-specific subset). */
+export interface PanelBridge extends NetcattyBridge {
+  credentialsDecrypt?: (value: string) => Promise<string>;
+  aiSyncProviders?: (providers: Array<{ id: string; providerId: string; apiKey?: string; baseURL?: string; enabled: boolean }>) => Promise<{ ok: boolean }>;
+  aiMcpUpdateSessions?: (sessions: TerminalSessionInfo[], chatSessionId?: string) => Promise<unknown>;
+  aiAcpCleanup?: (chatSessionId: string) => Promise<{ ok: boolean }>;
+  [key: string]: ((...args: unknown[]) => unknown) | undefined;
+}
+
+/** Terminal session info used throughout the streaming hooks. */
+export interface TerminalSessionInfo {
+  sessionId: string;
+  hostId: string;
+  hostname: string;
+  label: string;
+  os?: string;
+  username?: string;
+  connected: boolean;
+}
+
+/** Typed accessor for the netcatty bridge on the window object. */
+export function getNetcattyBridge(): PanelBridge | undefined {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  return (window as any).netcatty as PanelBridge | undefined;
+}
+
+/** Approval info returned by processCattyStream when a tool-approval-request is received. */
+export interface ApprovalInfo {
+  approvalId: string;
+  toolCallId: string;
+  toolName: string;
+  toolArgs: Record<string, unknown>;
+}
+
+/** Pending approval context stored between approval request and user response. */
+export interface PendingApprovalContext {
+  sessionId: string;
+  scopeKey: string;
+  sdkMessages: Array<ModelMessage>;
+  approvalInfo: ApprovalInfo;
+  model: ReturnType<typeof createModelFromConfig>;
+  systemPrompt: string;
+  tools: ReturnType<typeof createCattyTools>;
+}
+
+function generateId(): string {
+  return `msg-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`;
+}
+
+// -------------------------------------------------------------------
+// Hook parameters
+// -------------------------------------------------------------------
+
+export interface UseAIChatStreamingParams {
+  maxIterations: number;
+  addMessageToSession: (sessionId: string, message: ChatMessage) => void;
+  updateLastMessage: (sessionId: string, updater: (msg: ChatMessage) => ChatMessage) => void;
+  updateMessageById: (sessionId: string, messageId: string, updater: (msg: ChatMessage) => ChatMessage) => void;
+}
+
+// -------------------------------------------------------------------
+// Hook return type
+// -------------------------------------------------------------------
+
+export interface UseAIChatStreamingReturn {
+  /** Set of session IDs currently streaming. */
+  streamingSessionIds: Set<string>;
+  /** Set or unset streaming state for a session. */
+  setStreamingForScope: (key: string, val: boolean) => void;
+  /** Ref to per-session abort controllers. */
+  abortControllersRef: React.MutableRefObject<Map<string, AbortController>>;
+  /** Process a Catty agent stream, returning approval info if one is requested. */
+  processCattyStream: (
+    streamSessionId: string,
+    model: ReturnType<typeof createModelFromConfig>,
+    systemPrompt: string,
+    tools: ReturnType<typeof createCattyTools>,
+    sdkMessages: Array<ModelMessage>,
+    signal: AbortSignal,
+    currentAssistantMsgId: string,
+  ) => Promise<ApprovalInfo | null>;
+  /** Send a message to the Catty agent (built-in). */
+  sendToCattyAgent: (
+    sessionId: string,
+    sendScopeKey: string,
+    trimmed: string,
+    abortController: AbortController,
+    currentSession: AISession | undefined,
+    assistantMsgId: string,
+    context: SendToCattyContext,
+  ) => Promise<void>;
+  /** Send a message to an external agent (ACP or raw process). */
+  sendToExternalAgent: (
+    sessionId: string,
+    trimmed: string,
+    agentConfig: ExternalAgentConfig,
+    abortController: AbortController,
+    attachedImages: Array<{ base64Data: string; mediaType: string; filename?: string }>,
+    context: SendToExternalContext,
+  ) => Promise<void>;
+  /** Report a streaming error to the chat. */
+  reportStreamError: (sessionId: string, abortSignal: AbortSignal, err: unknown) => void;
+}
+
+/** Context values needed by sendToCattyAgent that change frequently (avoids stale closures). */
+export interface SendToCattyContext {
+  activeProvider: ProviderConfig | undefined;
+  activeModelId: string;
+  scopeType: 'terminal' | 'workspace';
+  scopeTargetId?: string;
+  scopeLabel?: string;
+  globalPermissionMode: AIPermissionMode;
+  commandBlocklist?: string[];
+  terminalSessions: TerminalSessionInfo[];
+  setPendingApproval: (ctx: PendingApprovalContext | null) => void;
+  autoTitleSession: (sessionId: string, text: string) => void;
+}
+
+/** Context values needed by sendToExternalAgent that change frequently. */
+export interface SendToExternalContext {
+  terminalSessions: TerminalSessionInfo[];
+  providers: ProviderConfig[];
+  selectedAgentModel?: string;
+}
+
+// -------------------------------------------------------------------
+// Hook implementation
+// -------------------------------------------------------------------
+
+export function useAIChatStreaming({
+  maxIterations,
+  addMessageToSession,
+  updateLastMessage,
+  updateMessageById,
+}: UseAIChatStreamingParams): UseAIChatStreamingReturn {
+  // Per-session streaming state (keyed by sessionId)
+  const [streamingSessionIds, setStreamingSessions] = useState<Set<string>>(new Set());
+  const setStreamingForScope = useCallback((key: string, val: boolean) => {
+    setStreamingSessions(prev => {
+      const next = new Set(prev);
+      if (val) next.add(key); else next.delete(key);
+      return next;
+    });
+  }, []);
+
+  // Per-scope abort controllers
+  const abortControllersRef = useRef<Map<string, AbortController>>(new Map());
+
+  // -------------------------------------------------------------------
+  // reportStreamError
+  // -------------------------------------------------------------------
+
+  const reportStreamError = useCallback((
+    sessionId: string,
+    abortSignal: AbortSignal,
+    err: unknown,
+  ) => {
+    if (abortSignal.aborted) return;
+    const errorStr = err instanceof Error ? err.message : String(err);
+    // Log the full unsanitized error for debugging
+    console.error('[AIChatSidePanel] Stream error (full):', errorStr);
+    const errorInfo = classifyError(errorStr);
+    // Sanitize the displayed message to avoid leaking paths, keys, or other sensitive info
+    errorInfo.message = sanitizeErrorMessage(errorInfo.message);
+    updateLastMessage(sessionId, msg => ({
+      ...msg,
+      statusText: '',
+      executionStatus: msg.executionStatus === 'running' ? 'failed' : msg.executionStatus,
+    }));
+    addMessageToSession(sessionId, {
+      id: generateId(),
+      role: 'assistant',
+      content: '',
+      errorInfo,
+      timestamp: Date.now(),
+    });
+  }, [updateLastMessage, addMessageToSession]);
+
+  // -------------------------------------------------------------------
+  // processCattyStream
+  // -------------------------------------------------------------------
+
+  const processCattyStream = useCallback(async (
+    streamSessionId: string,
+    model: ReturnType<typeof createModelFromConfig>,
+    systemPrompt: string,
+    tools: ReturnType<typeof createCattyTools>,
+    sdkMessages: Array<ModelMessage>,
+    signal: AbortSignal,
+    currentAssistantMsgId: string,
+  ): Promise<ApprovalInfo | null> => {
+    const result = streamText({
+      model,
+      messages: sdkMessages,
+      system: systemPrompt,
+      tools,
+      stopWhen: stepCountIs(maxIterations),
+      abortSignal: signal,
+    });
+
+    // Track the current assistant message ID so updates target the correct message
+    let activeMsgId = currentAssistantMsgId;
+    let lastAddedRole: 'assistant' | 'tool' = 'assistant';
+    const reader = result.fullStream.getReader();
+    let pendingApprovalInfo: ApprovalInfo | null = null;
+
+    // -- Text-delta batching: accumulate deltas and flush periodically --
+    let pendingText = '';
+    let rafId: number | null = null;
+
+    const flushText = () => {
+      if (pendingText) {
+        const text = pendingText;
+        pendingText = '';
+        if (lastAddedRole === 'tool') {
+          const newId = generateId();
+          addMessageToSession(streamSessionId, {
+            id: newId,
+            role: 'assistant',
+            content: text,
+            timestamp: Date.now(),
+          });
+          activeMsgId = newId;
+          lastAddedRole = 'assistant';
+        } else {
+          updateMessageById(streamSessionId, activeMsgId, msg => ({
+            ...msg,
+            content: msg.content + text,
+          }));
+        }
+      }
+      rafId = null;
+    };
+
+    const cancelPendingFlush = () => {
+      if (rafId !== null) {
+        cancelAnimationFrame(rafId);
+        rafId = null;
+      }
+    };
+
+    try {
+    while (true) {
+      const { done, value } = await reader.read();
+      if (done) break;
+      // Use the StreamChunk union for type narrowing instead of unsafe casts
+      const chunk = value as StreamChunk;
+      switch (chunk.type) {
+        case 'text':
+        case 'text-delta': {
+          const typedChunk = chunk as TextDeltaChunk;
+          const text = typedChunk.text ?? typedChunk.textDelta;
+          if (text) {
+            pendingText += text;
+            if (rafId === null) {
+              rafId = requestAnimationFrame(flushText);
+            }
+          }
+          break;
+        }
+        case 'reasoning':
+        case 'reasoning-start':
+        case 'reasoning-delta': {
+          cancelPendingFlush();
+          flushText();
+          const typedChunk = chunk as ReasoningChunk;
+          const rText = typedChunk.text;
+          if (rText) {
+            if (lastAddedRole === 'tool') {
+              const newId = generateId();
+              addMessageToSession(streamSessionId, {
+                id: newId,
+                role: 'assistant',
+                content: '',
+                thinking: rText,
+                timestamp: Date.now(),
+              });
+              activeMsgId = newId;
+              lastAddedRole = 'assistant';
+            } else {
+              updateMessageById(streamSessionId, activeMsgId, msg => ({
+                ...msg,
+                thinking: (msg.thinking || '') + rText,
+              }));
+            }
+          }
+          break;
+        }
+        case 'reasoning-end':
+        case 'text-start':
+        case 'text-end':
+        case 'start':
+        case 'finish':
+        case 'start-step':
+        case 'finish-step':
+          break;
+        case 'tool-call': {
+          cancelPendingFlush();
+          flushText();
+          const typedChunk = chunk as ToolCallChunk;
+          updateMessageById(streamSessionId, activeMsgId, msg => ({
+            ...msg,
+            toolCalls: [...(msg.toolCalls || []), {
+              id: typedChunk.toolCallId,
+              name: typedChunk.toolName,
+              arguments: (typedChunk.input ?? typedChunk.args) as Record<string, unknown>,
+            }],
+            executionStatus: 'running',
+            statusText: undefined,
+          }));
+          break;
+        }
+        case 'tool-result': {
+          cancelPendingFlush();
+          flushText();
+          const typedChunk = chunk as ToolResultChunk;
+          // Mark the assistant message's tool execution as completed
+          updateMessageById(streamSessionId, activeMsgId, msg =>
+            msg.role === 'assistant' && msg.executionStatus === 'running'
+              ? { ...msg, executionStatus: 'completed', statusText: undefined } : msg,
+          );
+          const toolOutput = typedChunk.output ?? typedChunk.result;
+          addMessageToSession(streamSessionId, {
+            id: generateId(),
+            role: 'tool',
+            content: '',
+            toolResults: [{
+              toolCallId: typedChunk.toolCallId,
+              content: typeof toolOutput === 'string'
+                ? toolOutput
+                : JSON.stringify(toolOutput),
+              isError: false,
+            }],
+            timestamp: Date.now(),
+            executionStatus: 'completed',
+          });
+          lastAddedRole = 'tool';
+          break;
+        }
+        case 'tool-approval-request': {
+          cancelPendingFlush();
+          flushText();
+          const typedChunk = chunk as ToolApprovalRequestChunk;
+          pendingApprovalInfo = {
+            approvalId: typedChunk.approvalId,
+            toolCallId: typedChunk.toolCall.toolCallId,
+            toolName: typedChunk.toolCall.toolName,
+            toolArgs: typedChunk.toolCall.args ?? typedChunk.toolCall.input ?? {},
+          };
+          updateMessageById(streamSessionId, activeMsgId, msg => ({
+            ...msg,
+            pendingApproval: {
+              ...pendingApprovalInfo!,
+              status: 'pending' as const,
+            },
+          }));
+          break;
+        }
+        case 'error': {
+          cancelPendingFlush();
+          flushText();
+          const typedChunk = chunk as ErrorChunk;
+          updateMessageById(streamSessionId, activeMsgId, msg => ({
+            ...msg,
+            statusText: '',
+            executionStatus: msg.executionStatus === 'running' ? 'failed' : msg.executionStatus,
+          }));
+          addMessageToSession(streamSessionId, {
+            id: generateId(),
+            role: 'assistant',
+            content: '',
+            errorInfo: classifyError(String(typedChunk.error)),
+            timestamp: Date.now(),
+          });
+          break;
+        }
+        default:
+          break;
+      }
+    }
+    } finally {
+      cancelPendingFlush();
+      flushText();
+      reader.releaseLock();
+    }
+    return pendingApprovalInfo;
+  }, [maxIterations, addMessageToSession, updateMessageById]);
+
+  // -------------------------------------------------------------------
+  // sendToExternalAgent
+  // -------------------------------------------------------------------
+
+  const sendToExternalAgent = useCallback(async (
+    sessionId: string,
+    trimmed: string,
+    agentConfig: ExternalAgentConfig,
+    abortController: AbortController,
+    attachedImages: Array<{ base64Data: string; mediaType: string; filename?: string }>,
+    context: SendToExternalContext,
+  ) => {
+    const bridge = getNetcattyBridge();
+
+    if (agentConfig.acpCommand && bridge) {
+      const requestId = `acp_${Date.now()}_${Math.random().toString(36).slice(2, 6)}`;
+
+      // Push terminal session metadata to MCP bridge
+      if (bridge?.aiMcpUpdateSessions) {
+        await bridge.aiMcpUpdateSessions(context.terminalSessions, sessionId);
+      }
+
+      // Pass only the provider ID — the main process resolves and decrypts the API key itself,
+      // avoiding plaintext key transit across the IPC boundary.
+      const openaiProvider = context.providers.find(p => p.providerId === 'openai' && p.enabled && p.apiKey);
+      const agentProviderId = openaiProvider?.id;
+
+      // Mutable flag: set after tool-result, cleared when new assistant msg is created
+      let needsNewAssistantMsg = false;
+      const maybeCreateAssistantMsg = () => {
+        if (needsNewAssistantMsg) {
+          needsNewAssistantMsg = false;
+          addMessageToSession(sessionId, {
+            id: generateId(), role: 'assistant', content: '', timestamp: Date.now(),
+            model: agentConfig.name || 'external',
+          });
+        }
+      };
+
+      await runAcpAgentTurn(
+        bridge,
+        requestId,
+        sessionId,
+        agentConfig,
+        trimmed,
+        {
+          onTextDelta: (text: string) => {
+            maybeCreateAssistantMsg();
+            updateLastMessage(sessionId, msg => ({
+              ...msg,
+              content: msg.content + text,
+              statusText: undefined,
+              thinkingDurationMs: msg.thinking && !msg.thinkingDurationMs
+                ? Date.now() - msg.timestamp : msg.thinkingDurationMs,
+            }));
+          },
+          onThinkingDelta: (text: string) => {
+            maybeCreateAssistantMsg();
+            updateLastMessage(sessionId, msg => ({
+              ...msg, thinking: (msg.thinking || '') + text,
+            }));
+          },
+          onThinkingDone: () => {
+            updateLastMessage(sessionId, msg => ({
+              ...msg, thinkingDurationMs: msg.thinkingDurationMs || (Date.now() - msg.timestamp),
+            }));
+          },
+          onToolCall: (toolName: string, args: Record<string, unknown>) => {
+            maybeCreateAssistantMsg();
+            updateLastMessage(sessionId, msg => ({
+              ...msg,
+              toolCalls: [...(msg.toolCalls || []), { id: `tc_${Date.now()}`, name: toolName, arguments: args }],
+              executionStatus: 'running',
+              statusText: undefined,
+            }));
+          },
+          onToolResult: (toolCallId: string, result: string) => {
+            updateLastMessage(sessionId, msg =>
+              msg.role === 'assistant' && msg.executionStatus === 'running'
+                ? { ...msg, executionStatus: 'completed', statusText: undefined } : msg,
+            );
+            addMessageToSession(sessionId, {
+              id: generateId(), role: 'tool', content: '',
+              toolResults: [{ toolCallId, content: result, isError: false }],
+              timestamp: Date.now(), executionStatus: 'completed',
+            });
+            needsNewAssistantMsg = true;
+          },
+          onStatus: (message: string) => {
+            maybeCreateAssistantMsg();
+            updateLastMessage(sessionId, msg => ({ ...msg, statusText: message }));
+          },
+          onError: (error: string) => {
+            reportStreamError(sessionId, abortController.signal, error);
+            setStreamingForScope(sessionId, false);
+          },
+          onDone: () => {},
+        },
+        abortController.signal,
+        agentProviderId,
+        context.selectedAgentModel,
+        attachedImages.length > 0 ? attachedImages : undefined,
+      );
+    } else {
+      // Fallback: spawn as raw process
+      await runExternalAgentTurn(
+        agentConfig,
+        trimmed,
+        {
+          onTextDelta: (text: string) => {
+            updateLastMessage(sessionId, msg => ({ ...msg, content: msg.content + text }));
+          },
+          onError: (error: string) => {
+            reportStreamError(sessionId, abortController.signal, error);
+            setStreamingForScope(sessionId, false);
+          },
+          onDone: () => {},
+        },
+        bridge as unknown as Parameters<typeof runExternalAgentTurn>[3],
+        abortController.signal,
+      );
+    }
+  }, [
+    addMessageToSession, updateLastMessage, setStreamingForScope, reportStreamError,
+  ]);
+
+  // -------------------------------------------------------------------
+  // sendToCattyAgent
+  // -------------------------------------------------------------------
+
+  const sendToCattyAgent = useCallback(async (
+    sessionId: string,
+    sendScopeKey: string,
+    trimmed: string,
+    abortController: AbortController,
+    currentSession: AISession | undefined,
+    assistantMsgId: string,
+    context: SendToCattyContext,
+  ) => {
+    const bridge = getNetcattyBridge();
+    const tools = createCattyTools(bridge, {
+      sessions: context.terminalSessions,
+      workspaceId: context.scopeTargetId,
+      workspaceName: context.scopeLabel,
+    }, context.commandBlocklist, context.globalPermissionMode);
+
+    const systemPrompt = buildSystemPrompt({
+      scopeType: context.scopeType, scopeLabel: context.scopeLabel,
+      hosts: context.terminalSessions.map(s => ({
+        sessionId: s.sessionId, hostname: s.hostname, label: s.label,
+        os: s.os, username: s.username, connected: s.connected,
+      })),
+      permissionMode: context.globalPermissionMode,
+    });
+
+    // Guard: activeProvider must exist for Catty agent path
+    if (!context.activeProvider) {
+      reportStreamError(sessionId, abortController.signal, 'No AI provider configured. Please configure a provider in Settings → AI.');
+      return;
+    }
+
+    // Create model with placeholder API key — the main process injects the real
+    // decrypted key when the HTTP request is proxied through IPC, so plaintext
+    // keys never transit the renderer ↔ main IPC boundary.
+    let model;
+    try {
+      model = createModelFromConfig({
+        ...context.activeProvider,
+        defaultModel: context.activeModelId || context.activeProvider.defaultModel || '',
+      });
+    } catch (e) {
+      console.error('[Catty] Model creation failed:', e);
+      reportStreamError(sessionId, abortController.signal, `Model creation failed: ${e instanceof Error ? e.message : String(e)}`);
+      return;
+    }
+
+    try {
+      // Issue #5: Build SDK messages including tool-call and tool-result messages
+      // so the LLM maintains full conversation context
+      const sdkMessages: Array<ModelMessage> = [];
+      for (const m of (currentSession?.messages ?? [])) {
+        if (m.role === 'user') {
+          sdkMessages.push({ role: 'user', content: m.content });
+        } else if (m.role === 'assistant') {
+          if (m.toolCalls?.length) {
+            // Build assistant content parts: text + tool calls
+            const contentParts: Array<
+              { type: 'text'; text: string } |
+              { type: 'tool-call'; toolCallId: string; toolName: string; input: unknown }
+            > = [];
+            if (m.content) {
+              contentParts.push({ type: 'text' as const, text: m.content });
+            }
+            for (const tc of m.toolCalls) {
+              contentParts.push({
+                type: 'tool-call' as const,
+                toolCallId: tc.id,
+                toolName: tc.name,
+                input: tc.arguments ?? {},
+              });
+            }
+            sdkMessages.push({ role: 'assistant', content: contentParts });
+          } else if (m.content) {
+            sdkMessages.push({ role: 'assistant', content: m.content });
+          }
+        } else if (m.role === 'tool' && m.toolResults?.length) {
+          // Map tool results to SDK tool message format
+          // Gemini requires functionResponse.name to be non-empty,
+          // so we look up the toolName from the preceding assistant tool calls.
+          const findToolName = (toolCallId: string): string => {
+            for (const prev of currentSession?.messages ?? []) {
+              if (prev.role === 'assistant' && prev.toolCalls) {
+                const tc = prev.toolCalls.find(t => t.id === toolCallId);
+                if (tc) return tc.name;
+              }
+            }
+            return 'unknown';
+          };
+          sdkMessages.push({
+            role: 'tool',
+            content: m.toolResults.map(tr => ({
+              type: 'tool-result' as const,
+              toolCallId: tr.toolCallId,
+              toolName: findToolName(tr.toolCallId),
+              output: { type: 'text' as const, value: tr.content },
+            })),
+          });
+        }
+      }
+      sdkMessages.push({ role: 'user', content: trimmed });
+
+      const approvalInfo = await processCattyStream(sessionId, model, systemPrompt, tools, sdkMessages, abortController.signal, assistantMsgId);
+
+      if (approvalInfo) {
+        context.setPendingApproval({
+          sessionId, scopeKey: sendScopeKey, sdkMessages, approvalInfo, model, systemPrompt, tools,
+        });
+        return; // Keep streaming flag — waiting for user approval
+      }
+    } catch (err) {
+      console.error('[Catty] streamText error:', err);
+      reportStreamError(sessionId, abortController.signal, err);
+    } finally {
+      // Clear any lingering statusText when the stream finishes
+      updateLastMessage(sessionId, msg => msg.statusText ? { ...msg, statusText: '' } : msg);
+      setStreamingForScope(sessionId, false);
+      abortControllersRef.current.delete(sessionId);
+      context.autoTitleSession(sessionId, trimmed);
+    }
+  }, [
+    processCattyStream, reportStreamError, setStreamingForScope,
+    updateLastMessage,
+  ]);
+
+  return {
+    streamingSessionIds,
+    setStreamingForScope,
+    abortControllersRef,
+    processCattyStream,
+    sendToCattyAgent,
+    sendToExternalAgent,
+    reportStreamError,
+  };
+}

components/ai/hooks/useConversationExport.ts

@@ -0,0 +1,76 @@
+/**
+ * useConversationExport — Encapsulates conversation export logic for the AI chat panel.
+ *
+ * Handles:
+ * - Export in markdown, JSON, and plain text formats
+ * - Object URL lifecycle management (creation, revocation, cleanup on unmount)
+ */
+
+import React, { useCallback, useEffect, useRef } from 'react';
+import type { AISession } from '../../../infrastructure/ai/types';
+import { exportAsMarkdown, exportAsJSON, exportAsPlainText, getExportFilename } from '../../../infrastructure/ai/conversationExport';
+
+// -------------------------------------------------------------------
+// Hook return type
+// -------------------------------------------------------------------
+
+export interface UseConversationExportReturn {
+  /** Trigger a download of the active session in the given format. */
+  handleExport: (format: 'md' | 'json' | 'txt') => void;
+  /** Ref to active object URLs for cleanup on unmount (exposed for the parent cleanup effect). */
+  activeObjectUrlsRef: React.MutableRefObject<Set<string>>;
+}
+
+// -------------------------------------------------------------------
+// Hook implementation
+// -------------------------------------------------------------------
+
+export function useConversationExport(
+  activeSession: AISession | null,
+): UseConversationExportReturn {
+  // Ref to track active object URLs for cleanup on unmount (Issue #19)
+  const activeObjectUrlsRef = useRef<Set<string>>(new Set());
+
+  // Clean up object URLs on unmount
+  useEffect(() => {
+    const urls = activeObjectUrlsRef.current;
+    return () => {
+      urls.forEach(url => URL.revokeObjectURL(url));
+      urls.clear();
+    };
+  }, []);
+
+  const handleExport = useCallback((format: 'md' | 'json' | 'txt') => {
+    if (!activeSession) return;
+    let content: string;
+    switch (format) {
+      case 'md': content = exportAsMarkdown(activeSession); break;
+      case 'json': content = exportAsJSON(activeSession); break;
+      case 'txt': content = exportAsPlainText(activeSession); break;
+    }
+    const filename = getExportFilename(activeSession, format);
+    // Create a download blob
+    const blob = new Blob([content], { type: 'text/plain;charset=utf-8' });
+    const url = URL.createObjectURL(blob);
+    // Track URL for cleanup on unmount (Issue #19)
+    activeObjectUrlsRef.current.add(url);
+    const a = document.createElement('a');
+    a.href = url;
+    a.download = filename;
+    document.body.appendChild(a);
+    a.click();
+    document.body.removeChild(a);
+    // Revoke after a generous delay to ensure download completes, then remove from tracking set
+    const revokeTimeout = setTimeout(() => {
+      URL.revokeObjectURL(url);
+      activeObjectUrlsRef.current.delete(url);
+    }, 60_000); // 60 seconds to be safe for large files
+    // If component unmounts before timeout, cleanup effect will revoke it
+    void revokeTimeout; // suppress unused warning
+  }, [activeSession]);
+
+  return {
+    handleExport,
+    activeObjectUrlsRef,
+  };
+}

components/ai/hooks/useToolApproval.ts

@@ -0,0 +1,280 @@
+/**
+ * useToolApproval — Encapsulates the tool approval workflow for the AI chat panel.
+ *
+ * Handles:
+ * - Pending approval context management
+ * - Approval timeout (auto-clear after 5 minutes)
+ * - handleApprovalResponse (approve/reject from InlineApprovalCard)
+ * - Resuming the Catty stream after approval
+ */
+
+import React, { useCallback, useRef } from 'react';
+import type { ModelMessage } from 'ai';
+import type {
+  AIPermissionMode,
+  ChatMessage,
+} from '../../../infrastructure/ai/types';
+import { buildSystemPrompt } from '../../../infrastructure/ai/cattyAgent/systemPrompt';
+import { createCattyTools } from '../../../infrastructure/ai/sdk/tools';
+import { classifyError } from '../../../infrastructure/ai/errorClassifier';
+import type {
+  ApprovalInfo,
+  PendingApprovalContext,
+  TerminalSessionInfo,
+} from './useAIChatStreaming';
+import { getNetcattyBridge } from './useAIChatStreaming';
+import type { createModelFromConfig } from '../../../infrastructure/ai/sdk/providers';
+
+function generateId(): string {
+  return `msg-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`;
+}
+
+// -------------------------------------------------------------------
+// Hook parameters
+// -------------------------------------------------------------------
+
+export interface UseToolApprovalParams {
+  addMessageToSession: (sessionId: string, message: ChatMessage) => void;
+  updateLastMessage: (sessionId: string, updater: (msg: ChatMessage) => ChatMessage) => void;
+  updateMessageById: (sessionId: string, messageId: string, updater: (msg: ChatMessage) => ChatMessage) => void;
+  setStreamingForScope: (key: string, val: boolean) => void;
+  abortControllersRef: React.MutableRefObject<Map<string, AbortController>>;
+  processCattyStream: (
+    streamSessionId: string,
+    model: ReturnType<typeof createModelFromConfig>,
+    systemPrompt: string,
+    tools: ReturnType<typeof createCattyTools>,
+    sdkMessages: Array<ModelMessage>,
+    signal: AbortSignal,
+    currentAssistantMsgId: string,
+  ) => Promise<ApprovalInfo | null>;
+  t: (key: string) => string;
+}
+
+// -------------------------------------------------------------------
+// Hook return type
+// -------------------------------------------------------------------
+
+export interface UseToolApprovalReturn {
+  /** Ref to the current pending approval context (null when none). */
+  pendingApprovalContextRef: React.MutableRefObject<PendingApprovalContext | null>;
+  /** Set or clear the pending approval context (manages timeout). */
+  setPendingApproval: (ctx: PendingApprovalContext | null) => void;
+  /** Handle a user's approve/reject response from InlineApprovalCard. */
+  handleApprovalResponse: (
+    messageId: string,
+    approved: boolean,
+    approvalContext: ToolApprovalContext,
+  ) => Promise<void>;
+}
+
+/** Context values needed by handleApprovalResponse that change frequently. */
+export interface ToolApprovalContext {
+  terminalSessions: TerminalSessionInfo[];
+  scopeType: 'terminal' | 'workspace';
+  scopeTargetId?: string;
+  scopeLabel?: string;
+  globalPermissionMode: AIPermissionMode;
+  commandBlocklist?: string[];
+}
+
+// -------------------------------------------------------------------
+// Hook implementation
+// -------------------------------------------------------------------
+
+export function useToolApproval({
+  addMessageToSession,
+  updateLastMessage,
+  updateMessageById,
+  setStreamingForScope,
+  abortControllersRef,
+  processCattyStream,
+  t,
+}: UseToolApprovalParams): UseToolApprovalReturn {
+  // Pending approval context — stores SDK state needed to resume after user approves/rejects
+  const pendingApprovalContextRef = useRef<PendingApprovalContext | null>(null);
+
+  // Timeout ID for auto-clearing stale pending approval (Issue #14)
+  const pendingApprovalTimeoutRef = useRef<ReturnType<typeof setTimeout> | null>(null);
+
+  /** Set pending approval context with a 5-minute auto-clear timeout. */
+  const setPendingApproval = useCallback((ctx: PendingApprovalContext | null) => {
+    // Clear any existing timeout
+    if (pendingApprovalTimeoutRef.current) {
+      clearTimeout(pendingApprovalTimeoutRef.current);
+      pendingApprovalTimeoutRef.current = null;
+    }
+    pendingApprovalContextRef.current = ctx;
+    if (ctx) {
+      pendingApprovalTimeoutRef.current = setTimeout(() => {
+        // Auto-clear after 5 minutes if user never responds
+        if (pendingApprovalContextRef.current?.sessionId === ctx.sessionId) {
+          pendingApprovalContextRef.current = null;
+          setStreamingForScope(ctx.sessionId, false);
+          abortControllersRef.current.get(ctx.sessionId)?.abort();
+          abortControllersRef.current.delete(ctx.sessionId);
+          // Notify the user that the approval timed out
+          updateLastMessage(ctx.sessionId, msg => ({
+            ...msg,
+            statusText: '',
+            executionStatus: msg.executionStatus === 'running' ? 'failed' : msg.executionStatus,
+          }));
+          addMessageToSession(ctx.sessionId, {
+            id: generateId(),
+            role: 'assistant',
+            content: t('ai.chat.approvalTimeout'),
+            timestamp: Date.now(),
+          });
+        }
+        pendingApprovalTimeoutRef.current = null;
+      }, 5 * 60 * 1000); // 5 minutes
+    }
+  }, [setStreamingForScope, abortControllersRef, updateLastMessage, addMessageToSession, t]);
+
+  // Handle inline approval response (approve/reject from InlineApprovalCard)
+  const handleApprovalResponse = useCallback(async (
+    messageId: string,
+    approved: boolean,
+    approvalContext: ToolApprovalContext,
+  ) => {
+    const ctx = pendingApprovalContextRef.current;
+    if (!ctx) return;
+    // Destructure all needed values BEFORE clearing the ref to avoid race conditions
+    const { sessionId: sid, scopeKey: sk, sdkMessages, approvalInfo, model: ctxModel } = ctx;
+    // Clear pending approval (and its timeout) via setPendingApproval
+    setPendingApproval(null);
+
+    // Update the message's pendingApproval status using message ID
+    updateMessageById(sid, messageId, msg => ({
+      ...msg,
+      pendingApproval: msg.pendingApproval
+        ? { ...msg.pendingApproval, status: approved ? 'approved' as const : 'denied' as const }
+        : undefined,
+    }));
+
+    if (!approved) {
+      // User rejected — add denial text and stop
+      updateMessageById(sid, messageId, msg => ({
+        ...msg,
+        content: msg.content + (msg.content ? '\n\n' : '') + t('ai.chat.toolDenied'),
+        statusText: '',
+        executionStatus: 'completed',
+      }));
+      setStreamingForScope(sid, false);
+      abortControllersRef.current.delete(sid);
+      return;
+    }
+
+    // User approved — construct SDK messages with approval response and resume
+    const resumeMessages: Array<Record<string, unknown>> = [
+      ...sdkMessages,
+      // The assistant message that contained the tool call + approval request
+      {
+        role: 'assistant',
+        content: [
+          {
+            type: 'tool-call',
+            toolCallId: approvalInfo.toolCallId,
+            toolName: approvalInfo.toolName,
+            input: approvalInfo.toolArgs,
+          },
+          {
+            type: 'tool-approval-request',
+            approvalId: approvalInfo.approvalId,
+            toolCallId: approvalInfo.toolCallId,
+          },
+        ],
+      },
+      // The user's approval response
+      {
+        role: 'tool',
+        content: [
+          {
+            type: 'tool-approval-response',
+            approvalId: approvalInfo.approvalId,
+            approved: true,
+          },
+        ],
+      },
+    ];
+
+    // Create a new assistant message placeholder for the continuation
+    const newAssistantMsgId = generateId();
+    addMessageToSession(sid, {
+      id: newAssistantMsgId,
+      role: 'assistant',
+      content: '',
+      timestamp: Date.now(),
+    });
+
+    const abortController = new AbortController();
+    abortControllersRef.current.set(sid, abortController);
+
+    try {
+      // Rebuild tools and system prompt with the latest permission mode to prevent
+      // stale closure issues (e.g. user changed permission mode during approval wait)
+      const bridge = getNetcattyBridge();
+      const freshTools = createCattyTools(bridge, {
+        sessions: approvalContext.terminalSessions,
+        workspaceId: approvalContext.scopeTargetId,
+        workspaceName: approvalContext.scopeLabel,
+      }, approvalContext.commandBlocklist, approvalContext.globalPermissionMode);
+      const freshSystemPrompt = buildSystemPrompt({
+        scopeType: approvalContext.scopeType, scopeLabel: approvalContext.scopeLabel,
+        hosts: approvalContext.terminalSessions.map(s => ({
+          sessionId: s.sessionId, hostname: s.hostname, label: s.label,
+          os: s.os, username: s.username, connected: s.connected,
+        })),
+        permissionMode: approvalContext.globalPermissionMode,
+      });
+      const newApprovalInfo = await processCattyStream(sid, ctxModel, freshSystemPrompt, freshTools, resumeMessages as unknown as ModelMessage[], abortController.signal, newAssistantMsgId);
+
+      if (newApprovalInfo) {
+        // Another approval needed — save context for the next round (with timeout)
+        setPendingApproval({
+          sessionId: sid,
+          scopeKey: sk,
+          sdkMessages: resumeMessages,
+          approvalInfo: newApprovalInfo,
+          model: ctxModel,
+          systemPrompt: freshSystemPrompt,
+          tools: freshTools,
+        });
+        return;
+      }
+    } catch (err) {
+      console.error('[Catty resume] streamText error:', err);
+      if (!abortController.signal.aborted) {
+        const errorStr = err instanceof Error ? err.message : String(err);
+        updateMessageById(sid, newAssistantMsgId, msg => ({
+          ...msg,
+          statusText: '',
+          executionStatus: msg.executionStatus === 'running' ? 'failed' : msg.executionStatus,
+        }));
+        addMessageToSession(sid, {
+          id: generateId(),
+          role: 'assistant',
+          content: '',
+          errorInfo: classifyError(errorStr),
+          timestamp: Date.now(),
+        });
+      }
+    } finally {
+      if (!pendingApprovalContextRef.current || pendingApprovalContextRef.current.sessionId !== sid) {
+        // Clear any lingering statusText when the resumed stream finishes
+        updateLastMessage(sid, msg => msg.statusText ? { ...msg, statusText: '' } : msg);
+        setStreamingForScope(sid, false);
+        abortControllersRef.current.delete(sid);
+      }
+    }
+  }, [
+    processCattyStream, addMessageToSession, updateMessageById, updateLastMessage,
+    setStreamingForScope, abortControllersRef, t, setPendingApproval,
+  ]);
+
+  return {
+    pendingApprovalContextRef,
+    setPendingApproval,
+    handleApprovalResponse,
+  };
+}

components/settings/settings-ui.tsx

@@ -34,13 +34,21 @@ export const Toggle: React.FC<ToggleProps> = ({ checked, onChange, disabled }) =
 
 interface SelectProps {
   value: string;
-  options: { value: string; label: string }[];
+  options: { value: string; label: string; icon?: React.ReactNode }[];
   onChange: (value: string) => void;
   className?: string;
   disabled?: boolean;
+  placeholder?: string;
 }
 
-export const Select: React.FC<SelectProps> = ({ value, options, onChange, className, disabled }) => {
+export const Select: React.FC<SelectProps> = ({
+  value,
+  options,
+  onChange,
+  className,
+  disabled,
+  placeholder,
+}) => {
   const selectedOption = options.find((opt) => opt.value === value);
   return (
     <SelectPrimitive.Root value={value} onValueChange={onChange} disabled={disabled}>
@@ -50,7 +58,12 @@ export const Select: React.FC<SelectProps> = ({ value, options, onChange, classN
           className,
         )}
       >
-        <SelectPrimitive.Value>{selectedOption?.label ?? value}</SelectPrimitive.Value>
+        <SelectPrimitive.Value placeholder={placeholder}>
+          <span className="flex items-center gap-2">
+            {selectedOption?.icon}
+            {selectedOption?.label}
+          </span>
+        </SelectPrimitive.Value>
         <SelectPrimitive.Icon asChild>
           <ChevronDown className="ml-2 h-4 w-4 opacity-50" />
         </SelectPrimitive.Icon>
@@ -76,7 +89,12 @@ export const Select: React.FC<SelectProps> = ({ value, options, onChange, classN
                     <Check className="h-4 w-4" />
                   </SelectPrimitive.ItemIndicator>
                 </span>
-                <SelectPrimitive.ItemText>{opt.label}</SelectPrimitive.ItemText>
+                <SelectPrimitive.ItemText>
+                  <span className="flex items-center gap-2">
+                    {opt.icon}
+                    {opt.label}
+                  </span>
+                </SelectPrimitive.ItemText>
               </SelectPrimitive.Item>
             ))}
           </SelectPrimitive.Viewport>
@@ -120,4 +138,3 @@ export const SettingsTabContent: React.FC<{
     </ScrollArea>
   </TabsContent>
 );
-

components/settings/tabs/SettingsAITab.tsx

@@ -0,0 +1,528 @@
+/**
+ * Settings AI Tab - AI provider configuration, agent CLI detection, and safety settings
+ *
+ * Sub-components live in ./ai/ directory:
+ *   - ProviderCard, ProviderConfigForm, AddProviderDropdown
+ *   - ModelSelector, ProviderIconBadge
+ *   - CodexConnectionCard, ClaudeCodeCard
+ *   - SafetySettings
+ */
+import { Bot, Globe } from "lucide-react";
+import React, { useCallback, useEffect, useMemo, useState } from "react";
+import type {
+  AIPermissionMode,
+  AIProviderId,
+  ExternalAgentConfig,
+  ProviderConfig,
+} from "../../../infrastructure/ai/types";
+import { PROVIDER_PRESETS } from "../../../infrastructure/ai/types";
+import { useAgentDiscovery } from "../../../application/state/useAgentDiscovery";
+import { useI18n } from "../../../application/i18n/I18nProvider";
+import { TabsContent } from "../../ui/tabs";
+import { Select, SettingRow } from "../settings-ui";
+import { AgentIconBadge } from "../../ai/AgentIconBadge";
+
+import type {
+  AgentPathInfo,
+  CodexIntegrationStatus,
+  CodexLoginSession,
+} from "./ai/types";
+import {
+  AGENT_DEFAULTS,
+  getBridge,
+  normalizeCodexBridgeError,
+} from "./ai/types";
+import { ProviderIconBadge } from "./ai/ProviderIconBadge";
+import { ProviderCard } from "./ai/ProviderCard";
+import { AddProviderDropdown } from "./ai/AddProviderDropdown";
+import { CodexConnectionCard } from "./ai/CodexConnectionCard";
+import { ClaudeCodeCard } from "./ai/ClaudeCodeCard";
+import { SafetySettings } from "./ai/SafetySettings";
+
+// ---------------------------------------------------------------------------
+// Props
+// ---------------------------------------------------------------------------
+
+interface SettingsAITabProps {
+  providers: ProviderConfig[];
+  addProvider: (provider: ProviderConfig) => void;
+  updateProvider: (id: string, updates: Partial<ProviderConfig>) => void;
+  removeProvider: (id: string) => void;
+  activeProviderId: string;
+  setActiveProviderId: (id: string) => void;
+  activeModelId: string;
+  setActiveModelId: (id: string) => void;
+  globalPermissionMode: AIPermissionMode;
+  setGlobalPermissionMode: (mode: AIPermissionMode) => void;
+  externalAgents: ExternalAgentConfig[];
+  setExternalAgents: (value: ExternalAgentConfig[] | ((prev: ExternalAgentConfig[]) => ExternalAgentConfig[])) => void;
+  defaultAgentId: string;
+  setDefaultAgentId: (id: string) => void;
+  commandBlocklist: string[];
+  setCommandBlocklist: (value: string[]) => void;
+  commandTimeout: number;
+  setCommandTimeout: (value: number) => void;
+  maxIterations: number;
+  setMaxIterations: (value: number) => void;
+}
+
+// ---------------------------------------------------------------------------
+// Main Tab Component
+// ---------------------------------------------------------------------------
+
+const SettingsAITab: React.FC<SettingsAITabProps> = ({
+  providers,
+  addProvider,
+  updateProvider,
+  removeProvider,
+  activeProviderId,
+  setActiveProviderId,
+  activeModelId: _activeModelId,
+  setActiveModelId,
+  globalPermissionMode,
+  setGlobalPermissionMode,
+  externalAgents,
+  setExternalAgents,
+  defaultAgentId,
+  setDefaultAgentId,
+  commandBlocklist,
+  setCommandBlocklist,
+  commandTimeout,
+  setCommandTimeout,
+  maxIterations,
+  setMaxIterations,
+}) => {
+  const { t } = useI18n();
+  const [editingProviderId, setEditingProviderId] = useState<string | null>(null);
+  const [codexIntegration, setCodexIntegration] = useState<CodexIntegrationStatus | null>(null);
+  const [codexLoginSession, setCodexLoginSession] = useState<CodexLoginSession | null>(null);
+  const [isCodexLoading, setIsCodexLoading] = useState(false);
+  const [codexError, setCodexError] = useState<string | null>(null);
+
+  // Path detection state
+  const [codexPathInfo, setCodexPathInfo] = useState<AgentPathInfo | null>(null);
+  const [codexCustomPath, setCodexCustomPath] = useState("");
+  const [isResolvingCodex, setIsResolvingCodex] = useState(false);
+
+  const [claudePathInfo, setClaudePathInfo] = useState<AgentPathInfo | null>(null);
+  const [claudeCustomPath, setClaudeCustomPath] = useState("");
+  const [isResolvingClaude, setIsResolvingClaude] = useState(false);
+
+  const {
+    discoveredAgents,
+    isDiscovering,
+    enableAgent,
+  } = useAgentDiscovery(externalAgents, setExternalAgents);
+
+  // Derive path info from discovery results
+  useEffect(() => {
+    if (isDiscovering) return;
+
+    const codex = discoveredAgents.find((a) => a.command === "codex");
+    setCodexPathInfo(
+      codex
+        ? { path: codex.path, version: codex.version, available: true }
+        : { path: null, version: null, available: false },
+    );
+
+    const claude = discoveredAgents.find((a) => a.command === "claude");
+    setClaudePathInfo(
+      claude
+        ? { path: claude.path, version: claude.version, available: true }
+        : { path: null, version: null, available: false },
+    );
+  }, [isDiscovering, discoveredAgents]);
+
+  // Auto-register discovered agents in externalAgents
+  useEffect(() => {
+    if (isDiscovering || discoveredAgents.length === 0) return;
+
+    setExternalAgents((prev) => {
+      const agentsToRegister: ExternalAgentConfig[] = [];
+
+      for (const da of discoveredAgents) {
+        if (da.command !== "codex" && da.command !== "claude") continue;
+        const agentId = `discovered_${da.command}`;
+        if (prev.some((ea) => ea.id === agentId)) continue;
+        agentsToRegister.push(enableAgent(da));
+      }
+
+      return agentsToRegister.length > 0 ? [...prev, ...agentsToRegister] : prev;
+    });
+  }, [isDiscovering, discoveredAgents, enableAgent, setExternalAgents]);
+
+  // Validate a custom path for an agent
+  const handleCheckCustomPath = useCallback(async (agentKey: "codex" | "claude") => {
+    const bridge = getBridge();
+    if (!bridge?.aiResolveCli) return;
+
+    const customPath = agentKey === "codex" ? codexCustomPath : claudeCustomPath;
+    const setInfo = agentKey === "codex" ? setCodexPathInfo : setClaudePathInfo;
+    const setResolving = agentKey === "codex" ? setIsResolvingCodex : setIsResolvingClaude;
+
+    setResolving(true);
+    try {
+      const result = await bridge.aiResolveCli({
+        command: agentKey,
+        customPath: customPath.trim(),
+      });
+      setInfo(result);
+
+      // Register/update in externalAgents if valid
+      if (result.available && result.path) {
+        const agentId = `discovered_${agentKey}`;
+        const defaults = AGENT_DEFAULTS[agentKey];
+        setExternalAgents((prev) => {
+          const idx = prev.findIndex((a) => a.id === agentId);
+          const config: ExternalAgentConfig = {
+            id: agentId,
+            command: result.path!,
+            enabled: true,
+            ...defaults,
+          };
+          if (idx >= 0) {
+            const updated = [...prev];
+            updated[idx] = { ...updated[idx], command: result.path! };
+            return updated;
+          }
+          return [...prev, config];
+        });
+      }
+    } catch (err) {
+      console.error("Path resolution failed:", err);
+    } finally {
+      setResolving(false);
+    }
+  }, [codexCustomPath, claudeCustomPath, setExternalAgents]);
+
+  // Add a new provider from preset
+  const handleAddProvider = useCallback(
+    (providerId: AIProviderId) => {
+      const preset = PROVIDER_PRESETS[providerId];
+      const id = `provider_${Date.now()}_${Math.random().toString(36).slice(2, 6)}`;
+      addProvider({
+        id,
+        providerId,
+        name: preset.name,
+        baseURL: preset.defaultBaseURL,
+        enabled: false,
+      });
+      // Auto-open config form
+      setEditingProviderId(id);
+    },
+    [addProvider],
+  );
+
+  // Remove provider with confirmation
+  const handleRemoveProvider = useCallback(
+    (id: string) => {
+      const provider = providers.find((p) => p.id === id);
+      const name = provider?.name || id;
+      const ok = window.confirm(
+        t('confirm.removeProvider', { name }),
+      );
+      if (!ok) return;
+      removeProvider(id);
+      if (editingProviderId === id) {
+        setEditingProviderId(null);
+      }
+    },
+    [removeProvider, editingProviderId, providers, t],
+  );
+
+  // Agent options for default agent
+  const agentOptions = useMemo(() => [
+    { value: "catty", label: t('ai.defaultAgent.catty'), icon: <AgentIconBadge agent={{ id: "catty", type: "builtin" }} size="xs" variant="plain" /> },
+    ...externalAgents
+      .filter((a) => a.enabled)
+      .map((a) => ({ value: a.id, label: a.name, icon: <AgentIconBadge agent={a} size="xs" variant="plain" /> })),
+  ], [externalAgents, t]);
+
+  const hasOpenAiProviderKey = providers.some(
+    (provider) => provider.providerId === "openai" && provider.enabled && !!provider.apiKey,
+  );
+
+  const refreshCodexIntegration = useCallback(async () => {
+    const bridge = getBridge();
+    if (!bridge?.aiCodexGetIntegration) return;
+
+    setIsCodexLoading(true);
+    setCodexError(null);
+    try {
+      const integration = await bridge.aiCodexGetIntegration();
+      setCodexIntegration(integration);
+    } catch (err) {
+      setCodexError(normalizeCodexBridgeError(err));
+    } finally {
+      setIsCodexLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    void refreshCodexIntegration();
+  }, [refreshCodexIntegration]);
+
+  useEffect(() => {
+    if (!codexLoginSession || codexLoginSession.state !== "running") {
+      return;
+    }
+
+    const bridge = getBridge();
+    if (!bridge?.aiCodexGetLoginSession) {
+      return;
+    }
+
+    let cancelled = false;
+    const intervalId = window.setInterval(() => {
+      void bridge.aiCodexGetLoginSession?.(codexLoginSession.sessionId).then((result) => {
+        if (cancelled || !result?.ok || !result.session) return;
+
+        setCodexLoginSession(result.session);
+        if (result.session.state !== "running") {
+          if (result.session.state === "success") {
+            void refreshCodexIntegration();
+          }
+        }
+      }).catch((err) => {
+        if (!cancelled) {
+          setCodexError(normalizeCodexBridgeError(err));
+        }
+      });
+    }, 1000);
+
+    return () => {
+      cancelled = true;
+      window.clearInterval(intervalId);
+    };
+  }, [codexLoginSession, refreshCodexIntegration]);
+
+  const handleStartCodexLogin = useCallback(async () => {
+    const bridge = getBridge();
+    if (!bridge?.aiCodexStartLogin) return;
+
+    setCodexError(null);
+    setIsCodexLoading(true);
+    try {
+      const result = await bridge.aiCodexStartLogin();
+      if (!result.ok || !result.session) {
+        throw new Error(result.error || "Failed to start Codex login");
+      }
+      setCodexLoginSession(result.session);
+    } catch (err) {
+      setCodexError(normalizeCodexBridgeError(err));
+    } finally {
+      setIsCodexLoading(false);
+    }
+  }, []);
+
+  const handleCancelCodexLogin = useCallback(async () => {
+    const bridge = getBridge();
+    if (!bridge?.aiCodexCancelLogin || !codexLoginSession) return;
+
+    setCodexError(null);
+    try {
+      const result = await bridge.aiCodexCancelLogin(codexLoginSession.sessionId);
+      if (result.session) {
+        setCodexLoginSession(result.session);
+      }
+    } catch (err) {
+      setCodexError(normalizeCodexBridgeError(err));
+    }
+  }, [codexLoginSession]);
+
+  const handleOpenCodexLoginUrl = useCallback(() => {
+    const bridge = getBridge();
+    const url = codexLoginSession?.url;
+    if (!bridge?.openExternal || !url) return;
+    // Only allow https:// URLs to prevent opening arbitrary protocols
+    if (!url.startsWith("https://")) return;
+    void bridge.openExternal(url);
+  }, [codexLoginSession]);
+
+  const handleCodexLogout = useCallback(async () => {
+    const bridge = getBridge();
+    if (!bridge?.aiCodexLogout) return;
+
+    setCodexError(null);
+    setIsCodexLoading(true);
+    try {
+      const result = await bridge.aiCodexLogout();
+      if (!result.ok) {
+        throw new Error(result.error || "Failed to log out from Codex");
+      }
+      setCodexLoginSession(null);
+      await refreshCodexIntegration();
+    } catch (err) {
+      setCodexError(normalizeCodexBridgeError(err));
+    } finally {
+      setIsCodexLoading(false);
+    }
+  }, [refreshCodexIntegration]);
+
+  return (
+    <TabsContent
+      value="ai"
+      className="data-[state=inactive]:hidden h-full flex flex-col"
+    >
+      <div className="flex-1 overflow-y-auto overflow-x-hidden px-8 py-6">
+        <div className="max-w-2xl space-y-8">
+          {/* Header */}
+          <div>
+            <h2 className="text-xl font-semibold">{t('ai.title')}</h2>
+            <p className="text-sm text-muted-foreground mt-1">
+              {t('ai.description')}
+            </p>
+          </div>
+
+          {/* -- Providers Section -- */}
+          <div className="space-y-4">
+            <div className="flex items-center justify-between">
+              <div className="flex items-center gap-2">
+                <Globe size={18} className="text-muted-foreground" />
+                <h3 className="text-base font-medium">{t('ai.providers')}</h3>
+              </div>
+              <AddProviderDropdown onAdd={handleAddProvider} />
+            </div>
+
+            {providers.length === 0 ? (
+              <div className="rounded-lg border border-dashed border-border/60 p-6 text-center">
+                <Bot size={24} className="mx-auto text-muted-foreground mb-2" />
+                <p className="text-sm text-muted-foreground">
+                  {t('ai.providers.empty')}
+                </p>
+              </div>
+            ) : (
+              <div className="space-y-2">
+                {providers.map((provider) => (
+                  <ProviderCard
+                    key={provider.id}
+                    provider={provider}
+                    isActive={provider.id === activeProviderId}
+                    onToggleEnabled={(enabled) => {
+                      if (enabled) {
+                        // Activate this provider, deactivate all others
+                        setActiveProviderId(provider.id);
+                        if (provider.defaultModel) {
+                          setActiveModelId(provider.defaultModel);
+                        }
+                        for (const p of providers) {
+                          if (p.id === provider.id) {
+                            if (!p.enabled) updateProvider(p.id, { enabled: true });
+                          } else {
+                            if (p.enabled) updateProvider(p.id, { enabled: false });
+                          }
+                        }
+                      } else {
+                        // Deactivate this provider
+                        if (activeProviderId === provider.id) {
+                          setActiveProviderId("");
+                          setActiveModelId("");
+                        }
+                        updateProvider(provider.id, { enabled: false });
+                      }
+                    }}
+                    onEdit={() =>
+                      setEditingProviderId(
+                        editingProviderId === provider.id ? null : provider.id,
+                      )
+                    }
+                    onRemove={() => handleRemoveProvider(provider.id)}
+                    onUpdate={(updates) => {
+                      updateProvider(provider.id, updates);
+                      // If this is the active provider and model changed, update activeModelId
+                      if (provider.id === activeProviderId && updates.defaultModel !== undefined) {
+                        setActiveModelId(updates.defaultModel || "");
+                      }
+                    }}
+                    isEditing={editingProviderId === provider.id}
+                    onCancelEdit={() => setEditingProviderId(null)}
+                  />
+                ))}
+              </div>
+            )}
+          </div>
+
+          {/* -- Codex Section -- */}
+          <div className="space-y-4">
+            <div className="flex items-center gap-2">
+              <ProviderIconBadge providerId="openai" size="sm" />
+              <h3 className="text-base font-medium">{t('ai.codex')}</h3>
+            </div>
+
+            <CodexConnectionCard
+              pathInfo={codexPathInfo}
+              isResolvingPath={isDiscovering || isResolvingCodex}
+              customPath={codexCustomPath}
+              onCustomPathChange={setCodexCustomPath}
+              onRecheckPath={() => void handleCheckCustomPath("codex")}
+              integration={codexIntegration}
+              loginSession={codexLoginSession}
+              isLoading={isCodexLoading}
+              hasOpenAiProviderKey={hasOpenAiProviderKey}
+              error={codexError}
+              onRefresh={() => void refreshCodexIntegration()}
+              onConnect={() => void handleStartCodexLogin()}
+              onCancel={() => void handleCancelCodexLogin()}
+              onOpenUrl={handleOpenCodexLoginUrl}
+              onLogout={() => void handleCodexLogout()}
+            />
+          </div>
+
+          {/* -- Claude Code Section -- */}
+          <div className="space-y-4">
+            <div className="flex items-center gap-2">
+              <ProviderIconBadge providerId="claude" size="sm" />
+              <h3 className="text-base font-medium">{t('ai.claude.title')}</h3>
+            </div>
+
+            <ClaudeCodeCard
+              pathInfo={claudePathInfo}
+              isResolvingPath={isDiscovering || isResolvingClaude}
+              customPath={claudeCustomPath}
+              onCustomPathChange={setClaudeCustomPath}
+              onRecheckPath={() => void handleCheckCustomPath("claude")}
+            />
+          </div>
+
+          {/* -- Default Agent Section -- */}
+          {agentOptions.length > 1 && (
+            <div className="space-y-4">
+              <div className="flex items-center gap-2">
+                <Bot size={18} className="text-muted-foreground" />
+                <h3 className="text-base font-medium">{t('ai.defaultAgent')}</h3>
+              </div>
+
+              <div className="bg-muted/30 rounded-lg p-4">
+                <SettingRow
+                  label={t('ai.defaultAgent')}
+                  description={t('ai.defaultAgent.description')}
+                >
+                  <Select
+                    value={defaultAgentId}
+                    options={agentOptions}
+                    onChange={setDefaultAgentId}
+                    className="w-48"
+                  />
+                </SettingRow>
+              </div>
+            </div>
+          )}
+
+          {/* -- Safety Section -- */}
+          <SafetySettings
+            globalPermissionMode={globalPermissionMode}
+            setGlobalPermissionMode={setGlobalPermissionMode}
+            commandBlocklist={commandBlocklist}
+            setCommandBlocklist={setCommandBlocklist}
+            commandTimeout={commandTimeout}
+            setCommandTimeout={setCommandTimeout}
+            maxIterations={maxIterations}
+            setMaxIterations={setMaxIterations}
+          />
+        </div>
+      </div>
+    </TabsContent>
+  );
+};
+
+export default SettingsAITab;

components/settings/tabs/SettingsSyncTab.tsx

@@ -5,6 +5,7 @@ import { buildSyncPayload, applySyncPayload } from "../../../domain/syncPayload"
 import type { SyncableVaultData } from "../../../domain/syncPayload";
 import { STORAGE_KEY_PORT_FORWARDING } from "../../../infrastructure/config/storageKeys";
 import { localStorageAdapter } from "../../../infrastructure/persistence/localStorageAdapter";
+import { getEffectiveKnownHosts } from "../../../infrastructure/syncHelpers";
 import { CloudSyncSettings } from "../../CloudSyncSettings";
 import { SettingsTabContent } from "../settings-ui";
 
@@ -14,6 +15,7 @@ export default function SettingsSyncTab(props: {
   importDataFromString: (data: string) => void;
   importPortForwardingRules: (rules: PortForwardingRule[]) => void;
   clearVaultData: () => void;
+  onSettingsApplied?: () => void;
 }) {
   const {
     vault,
@@ -21,6 +23,7 @@ export default function SettingsSyncTab(props: {
     importDataFromString,
     importPortForwardingRules,
     clearVaultData,
+    onSettingsApplied,
   } = props;
 
   const onBuildPayload = useCallback((): SyncPayload => {
@@ -44,7 +47,10 @@ export default function SettingsSyncTab(props: {
         }));
       }
     }
-    return buildSyncPayload(vault, effectiveRules);
+
+    const effectiveKnownHosts = getEffectiveKnownHosts(vault.knownHosts);
+
+    return buildSyncPayload({ ...vault, knownHosts: effectiveKnownHosts }, effectiveRules);
   }, [vault, portForwardingRules]);
 
   const onApplyPayload = useCallback(
@@ -52,9 +58,10 @@ export default function SettingsSyncTab(props: {
       applySyncPayload(payload, {
         importVaultData: importDataFromString,
         importPortForwardingRules,
+        onSettingsApplied,
       });
     },
-    [importDataFromString, importPortForwardingRules],
+    [importDataFromString, importPortForwardingRules, onSettingsApplied],
   );
 
   const clearAllLocalData = useCallback(() => {

components/settings/tabs/SettingsSystemTab.tsx

@@ -55,6 +55,10 @@ interface SettingsSystemTabProps {
   closeToTray: boolean;
   setCloseToTray: (enabled: boolean) => void;
   hotkeyRegistrationError: string | null;
+  globalHotkeyEnabled: boolean;
+  setGlobalHotkeyEnabled: (enabled: boolean) => void;
+  autoUpdateEnabled: boolean;
+  setAutoUpdateEnabled: (enabled: boolean) => void;
   // Unified update state — from useUpdateCheck hook in SettingsPageContent
   updateState: UpdateState;
   checkNow: () => Promise<unknown>;
@@ -74,6 +78,10 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
   closeToTray,
   setCloseToTray,
   hotkeyRegistrationError,
+  globalHotkeyEnabled,
+  setGlobalHotkeyEnabled,
+  autoUpdateEnabled,
+  setAutoUpdateEnabled,
   updateState,
   checkNow,
   installUpdate,
@@ -367,6 +375,15 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
                 )}
               </div>
             </div>
+            <SettingRow
+              label={t('settings.update.autoUpdateEnabled')}
+              description={t('settings.update.autoUpdateEnabledDesc')}
+            >
+              <Toggle
+                checked={autoUpdateEnabled}
+                onChange={setAutoUpdateEnabled}
+              />
+            </SettingRow>
             <p className="text-xs text-muted-foreground">
               {updateState.lastCheckedAt && (
                 <span>
@@ -599,42 +616,55 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
             </div>
 
             <div className="bg-muted/30 rounded-lg p-4 space-y-4">
-              {/* Toggle Window Hotkey */}
+              {/* Enable/Disable Global Hotkey */}
               <SettingRow
-                label={t("settings.globalHotkey.toggleWindow")}
-                description={t("settings.globalHotkey.toggleWindowDesc")}
+                label={t('settings.globalHotkey.enabled')}
+                description={t('settings.globalHotkey.enabledDesc')}
               >
-                <div className="flex items-center gap-2">
-                  <button
-                    onClick={(e) => {
-                      e.stopPropagation();
-                      setIsRecordingHotkey(true);
-                    }}
-                    className={cn(
-                      "px-3 py-1.5 text-sm font-mono rounded border transition-colors min-w-[100px] text-center",
-                      isRecordingHotkey
-                        ? "border-primary bg-primary/10 animate-pulse"
-                        : "border-border hover:border-primary/50",
-                    )}
-                  >
-                    {isRecordingHotkey
-                      ? t("settings.shortcuts.recording")
-                      : toggleWindowHotkey || t("settings.globalHotkey.notSet")}
-                  </button>
-                  {toggleWindowHotkey && (
-                    <button
-                      onClick={handleResetHotkey}
-                      className="p-1 hover:bg-muted rounded"
-                      title={t("settings.globalHotkey.reset")}
-                    >
-                      <RotateCcw size={14} />
-                    </button>
-                  )}
-                </div>
+                <Toggle
+                  checked={globalHotkeyEnabled}
+                  onChange={setGlobalHotkeyEnabled}
+                />
               </SettingRow>
-              {(hotkeyError || hotkeyRegistrationError) && (
-                <p className="text-sm text-destructive">{hotkeyError || hotkeyRegistrationError}</p>
-              )}
+
+              <div className={cn(!globalHotkeyEnabled && "opacity-50 pointer-events-none")}>
+                {/* Toggle Window Hotkey */}
+                <SettingRow
+                  label={t("settings.globalHotkey.toggleWindow")}
+                  description={t("settings.globalHotkey.toggleWindowDesc")}
+                >
+                  <div className="flex items-center gap-2">
+                    <button
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        setIsRecordingHotkey(true);
+                      }}
+                      className={cn(
+                        "px-3 py-1.5 text-sm font-mono rounded border transition-colors min-w-[100px] text-center",
+                        isRecordingHotkey
+                          ? "border-primary bg-primary/10 animate-pulse"
+                          : "border-border hover:border-primary/50",
+                      )}
+                    >
+                      {isRecordingHotkey
+                        ? t("settings.shortcuts.recording")
+                        : toggleWindowHotkey || t("settings.globalHotkey.notSet")}
+                    </button>
+                    {toggleWindowHotkey && (
+                      <button
+                        onClick={handleResetHotkey}
+                        className="p-1 hover:bg-muted rounded"
+                        title={t("settings.globalHotkey.reset")}
+                      >
+                        <RotateCcw size={14} />
+                      </button>
+                    )}
+                  </div>
+                </SettingRow>
+                {(hotkeyError || hotkeyRegistrationError) && (
+                  <p className="text-sm text-destructive mt-2">{hotkeyError || hotkeyRegistrationError}</p>
+                )}
+              </div>
 
               {/* Close to Tray */}
               <SettingRow

components/settings/tabs/SettingsTerminalTab.tsx

@@ -575,6 +575,23 @@ export default function SettingsTerminalTab(props: {
           <Toggle checked={!terminalSettings.disableBracketedPaste} onChange={(v) => updateTerminalSetting("disableBracketedPaste", !v)} />
         </SettingRow>
 
+        <SettingRow
+          label={t("settings.terminal.behavior.osc52Clipboard")}
+          description={t("settings.terminal.behavior.osc52Clipboard.desc")}
+        >
+          <Select
+            value={terminalSettings.osc52Clipboard ?? 'write-only'}
+            options={[
+              { value: "off", label: t("settings.terminal.behavior.osc52Clipboard.off") },
+              { value: "write-only", label: t("settings.terminal.behavior.osc52Clipboard.writeOnly") },
+              { value: "read-write", label: t("settings.terminal.behavior.osc52Clipboard.readWrite") },
+              { value: "prompt", label: t("settings.terminal.behavior.osc52Clipboard.prompt") },
+            ]}
+            onChange={(v) => updateTerminalSetting("osc52Clipboard", v as "off" | "write-only" | "read-write" | "prompt")}
+            className="w-40"
+          />
+        </SettingRow>
+
         <SettingRow
           label={t("settings.terminal.behavior.scrollOnInput")}
           description={t("settings.terminal.behavior.scrollOnInput.desc")}

components/settings/tabs/ai/AddProviderDropdown.tsx

@@ -0,0 +1,55 @@
+import React, { useState } from "react";
+import { ChevronDown, Plus } from "lucide-react";
+import type { AIProviderId } from "../../../../infrastructure/ai/types";
+import { PROVIDER_PRESETS } from "../../../../infrastructure/ai/types";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Button } from "../../../ui/button";
+import { cn } from "../../../../lib/utils";
+import { ProviderIconBadge } from "./ProviderIconBadge";
+
+export const AddProviderDropdown: React.FC<{
+  onAdd: (providerId: AIProviderId) => void;
+}> = ({ onAdd }) => {
+  const { t } = useI18n();
+  const [isOpen, setIsOpen] = useState(false);
+
+  const providerIds = Object.keys(PROVIDER_PRESETS) as AIProviderId[];
+
+  return (
+    <div className="relative">
+      <Button
+        variant="outline"
+        size="sm"
+        onClick={() => setIsOpen(!isOpen)}
+        className="gap-1.5"
+      >
+        <Plus size={14} />
+        {t('ai.providers.add')}
+        <ChevronDown size={12} className={cn("transition-transform", isOpen && "rotate-180")} />
+      </Button>
+
+      {isOpen && (
+        <>
+          {/* Backdrop */}
+          <div className="fixed inset-0 z-[100]" onClick={() => setIsOpen(false)} />
+          {/* Menu */}
+          <div className="absolute top-full left-0 mt-1 z-[101] min-w-[200px] rounded-md border border-border bg-popover shadow-md py-1">
+            {providerIds.map((pid) => (
+              <button
+                key={pid}
+                onClick={() => {
+                  onAdd(pid);
+                  setIsOpen(false);
+                }}
+                className="w-full flex items-center gap-2.5 px-3 py-2 text-sm hover:bg-accent transition-colors text-left"
+              >
+                <ProviderIconBadge providerId={pid} size="sm" />
+                {PROVIDER_PRESETS[pid].name}
+              </button>
+            ))}
+          </div>
+        </>
+      )}
+    </div>
+  );
+};

components/settings/tabs/ai/ClaudeCodeCard.tsx

@@ -0,0 +1,88 @@
+import React from "react";
+import { RefreshCw } from "lucide-react";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Button } from "../../../ui/button";
+import { cn } from "../../../../lib/utils";
+import type { AgentPathInfo } from "./types";
+import { ProviderIconBadge } from "./ProviderIconBadge";
+
+export const ClaudeCodeCard: React.FC<{
+  pathInfo: AgentPathInfo | null;
+  isResolvingPath: boolean;
+  customPath: string;
+  onCustomPathChange: (path: string) => void;
+  onRecheckPath: () => void;
+}> = ({
+  pathInfo,
+  isResolvingPath,
+  customPath,
+  onCustomPathChange,
+  onRecheckPath,
+}) => {
+  const { t } = useI18n();
+  const found = pathInfo?.available;
+
+  const statusText = isResolvingPath
+    ? t('ai.claude.detecting')
+    : found
+      ? t('ai.claude.detected')
+      : t('ai.claude.notFound');
+
+  const statusClassName = isResolvingPath
+    ? "text-muted-foreground"
+    : found
+      ? "text-emerald-500"
+      : "text-amber-500";
+
+  return (
+    <div className="rounded-lg border border-border/60 bg-muted/20 p-4 space-y-3">
+      <div className="flex items-start justify-between gap-4">
+        <div className="min-w-0">
+          <div className="flex items-center gap-2">
+            <ProviderIconBadge providerId="claude" size="sm" />
+            <span className="text-sm font-medium">{t('ai.claude.title')}</span>
+          </div>
+          <p className="text-xs text-muted-foreground mt-2 leading-5">
+            {t('ai.claude.description')}
+          </p>
+        </div>
+        <div className={cn("text-xs font-medium shrink-0", statusClassName)}>
+          {statusText}
+        </div>
+      </div>
+
+      {/* Path detection info */}
+      {found ? (
+        <div className="flex items-center gap-2 text-xs">
+          <span className="text-muted-foreground">{t('ai.claude.path')}</span>
+          <span className="font-mono text-foreground truncate">{pathInfo.path}</span>
+          {pathInfo.version && (
+            <>
+              <span className="text-muted-foreground">|</span>
+              <span className="text-muted-foreground">{pathInfo.version}</span>
+            </>
+          )}
+        </div>
+      ) : !isResolvingPath ? (
+        <div className="space-y-2">
+          <p className="text-xs text-amber-500">
+            {t('ai.claude.notFoundHint')}
+          </p>
+          <div className="flex items-center gap-2">
+            <input
+              type="text"
+              value={customPath}
+              onChange={(e) => onCustomPathChange(e.target.value)}
+              placeholder={t('ai.claude.customPathPlaceholder')}
+              className="flex-1 h-8 rounded-md border border-input bg-background px-3 text-sm font-mono placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+            />
+            <Button variant="outline" size="sm" onClick={onRecheckPath} disabled={!customPath.trim()}>
+              <RefreshCw size={14} className="mr-1.5" />
+              {t('ai.claude.check')}
+            </Button>
+          </div>
+        </div>
+      ) : null}
+    </div>
+  );
+};

components/settings/tabs/ai/CodexConnectionCard.tsx

@@ -0,0 +1,181 @@
+import React from "react";
+import { ExternalLink, LogIn, LogOut, RefreshCw, X } from "lucide-react";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Button } from "../../../ui/button";
+import { cn } from "../../../../lib/utils";
+import type { AgentPathInfo, CodexIntegrationStatus, CodexLoginSession } from "./types";
+import { ProviderIconBadge } from "./ProviderIconBadge";
+
+export const CodexConnectionCard: React.FC<{
+  pathInfo: AgentPathInfo | null;
+  isResolvingPath: boolean;
+  customPath: string;
+  onCustomPathChange: (path: string) => void;
+  onRecheckPath: () => void;
+  integration: CodexIntegrationStatus | null;
+  loginSession: CodexLoginSession | null;
+  isLoading: boolean;
+  hasOpenAiProviderKey: boolean;
+  error: string | null;
+  onRefresh: () => void;
+  onConnect: () => void;
+  onCancel: () => void;
+  onOpenUrl: () => void;
+  onLogout: () => void;
+}> = ({
+  pathInfo,
+  isResolvingPath,
+  customPath,
+  onCustomPathChange,
+  onRecheckPath,
+  integration,
+  loginSession,
+  isLoading,
+  hasOpenAiProviderKey,
+  error,
+  onRefresh,
+  onConnect,
+  onCancel,
+  onOpenUrl,
+  onLogout,
+}) => {
+  const { t } = useI18n();
+  const found = pathInfo?.available;
+
+  const status = isResolvingPath
+    ? t('ai.codex.detecting')
+    : !found
+      ? t('ai.codex.notFound')
+      : loginSession?.state === "running"
+        ? t('ai.codex.awaitingLogin')
+        : integration?.state === "connected_chatgpt"
+          ? t('ai.codex.connectedChatGPT')
+          : integration?.state === "connected_api_key"
+            ? t('ai.codex.connectedApiKey')
+            : integration?.state === "not_logged_in"
+              ? t('ai.codex.notConnected')
+              : t('ai.codex.statusUnknown');
+
+  const statusClassName = isResolvingPath
+    ? "text-muted-foreground"
+    : !found
+      ? "text-amber-500"
+      : loginSession?.state === "running"
+        ? "text-amber-500"
+        : integration?.isConnected
+          ? "text-emerald-500"
+          : "text-muted-foreground";
+
+  const outputText = loginSession?.error
+    ? loginSession.error
+    : loginSession?.output?.trim()
+      ? loginSession.output.trim()
+      : integration?.rawOutput?.trim()
+        ? integration.rawOutput.trim()
+        : "";
+
+  return (
+    <div className="rounded-lg border border-border/60 bg-muted/20 p-4 space-y-3">
+      <div className="flex items-start justify-between gap-4">
+        <div className="min-w-0">
+          <div className="flex items-center gap-2">
+            <ProviderIconBadge providerId="openai" size="sm" />
+            <span className="text-sm font-medium">{t('ai.codex.title')}</span>
+          </div>
+          <p className="text-xs text-muted-foreground mt-2 leading-5">
+            {t('ai.codex.description')}
+          </p>
+        </div>
+        <div className={cn("text-xs font-medium shrink-0", statusClassName)}>
+          {status}
+        </div>
+      </div>
+
+      {/* Path detection info */}
+      {found ? (
+        <div className="flex items-center gap-2 text-xs">
+          <span className="text-muted-foreground">{t('ai.codex.path')}</span>
+          <span className="font-mono text-foreground truncate">{pathInfo.path}</span>
+          {pathInfo.version && (
+            <>
+              <span className="text-muted-foreground">|</span>
+              <span className="text-muted-foreground">{pathInfo.version}</span>
+            </>
+          )}
+        </div>
+      ) : !isResolvingPath ? (
+        <div className="space-y-2">
+          <p className="text-xs text-amber-500">
+            {t('ai.codex.notFoundHint')}
+          </p>
+          <div className="flex items-center gap-2">
+            <input
+              type="text"
+              value={customPath}
+              onChange={(e) => onCustomPathChange(e.target.value)}
+              placeholder={t('ai.codex.customPathPlaceholder')}
+              className="flex-1 h-8 rounded-md border border-input bg-background px-3 text-sm font-mono placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+            />
+            <Button variant="outline" size="sm" onClick={onRecheckPath} disabled={!customPath.trim()}>
+              <RefreshCw size={14} className="mr-1.5" />
+              {t('ai.codex.check')}
+            </Button>
+          </div>
+        </div>
+      ) : null}
+
+      {/* Connection & login UI -- only when codex is detected */}
+      {found && (
+        <>
+          <div className="border-t border-border/40 pt-3 flex items-center gap-2 flex-wrap">
+            {loginSession?.state === "running" ? (
+              <>
+                <Button variant="default" size="sm" onClick={onOpenUrl} disabled={!loginSession.url}>
+                  <ExternalLink size={14} className="mr-1.5" />
+                  {t('ai.codex.openLogin')}
+                </Button>
+                <Button variant="outline" size="sm" onClick={onCancel}>
+                  <X size={14} className="mr-1.5" />
+                  {t('common.cancel')}
+                </Button>
+              </>
+            ) : integration?.isConnected ? (
+              <Button variant="outline" size="sm" onClick={onLogout}>
+                <LogOut size={14} className="mr-1.5" />
+                {t('ai.codex.logout')}
+              </Button>
+            ) : (
+              <Button variant="default" size="sm" onClick={onConnect}>
+                <LogIn size={14} className="mr-1.5" />
+                {t('ai.codex.connectChatGPT')}
+              </Button>
+            )}
+
+            <Button variant="outline" size="sm" onClick={onRefresh} disabled={isLoading}>
+              <RefreshCw size={14} className={cn("mr-1.5", isLoading && "animate-spin")} />
+              {t('ai.codex.refreshStatus')}
+            </Button>
+          </div>
+
+          {hasOpenAiProviderKey && (
+            <p className="text-xs text-emerald-500">
+              {t('ai.codex.apiKeyHint')}
+            </p>
+          )}
+        </>
+      )}
+
+      {error && (
+        <p className="text-xs text-destructive">
+          {error}
+        </p>
+      )}
+
+      {found && outputText && (
+        <pre className="rounded-md border border-border/60 bg-background px-3 py-2 text-[11px] leading-5 text-muted-foreground whitespace-pre-wrap max-h-40 overflow-auto">
+          {outputText}
+        </pre>
+      )}
+    </div>
+  );
+};

components/settings/tabs/ai/ModelSelector.tsx

@@ -0,0 +1,179 @@
+import React, { useCallback, useEffect, useMemo, useState } from "react";
+import { Check, ChevronDown, RefreshCw } from "lucide-react";
+import type { AIProviderId } from "../../../../infrastructure/ai/types";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Button } from "../../../ui/button";
+import { cn } from "../../../../lib/utils";
+import type { FetchedModel } from "./types";
+import { getFetchBridge } from "./types";
+
+export const ModelSelector: React.FC<{
+  value: string;
+  onChange: (value: string) => void;
+  baseURL: string;
+  modelsEndpoint?: string;
+  placeholder?: string;
+  apiKey?: string;
+  providerId?: AIProviderId;
+}> = ({ value, onChange, baseURL, modelsEndpoint, placeholder, apiKey, providerId }) => {
+  const { t } = useI18n();
+  const [models, setModels] = useState<FetchedModel[]>([]);
+  const [isLoading, setIsLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [isOpen, setIsOpen] = useState(false);
+  const [hasFetched, setHasFetched] = useState(false);
+
+  // Ollama runs locally without auth; all other providers need an API key to list models
+  const needsApiKey = providerId !== "ollama";
+  const canFetch = !!modelsEndpoint && (!needsApiKey || !!apiKey);
+
+  const fetchModels = useCallback(async () => {
+    if (!modelsEndpoint) return;
+    const bridge = getFetchBridge();
+    if (!bridge?.aiFetch) return;
+
+    setIsLoading(true);
+    setError(null);
+    try {
+      // Temporarily allow the provider's host in the backend fetch allowlist
+      // so model listing works for URLs not yet synced from the main window.
+      if (bridge.aiAllowlistAddHost && baseURL) {
+        await bridge.aiAllowlistAddHost(baseURL);
+      }
+      const url = `${baseURL.replace(/\/+$/, "")}${modelsEndpoint}`;
+      const headers: Record<string, string> = {};
+      if (apiKey) {
+        if (providerId === "anthropic") {
+          headers["x-api-key"] = apiKey;
+          headers["anthropic-version"] = "2023-06-01";
+        } else {
+          headers["Authorization"] = `Bearer ${apiKey}`;
+        }
+      }
+      const result = await bridge.aiFetch(url, "GET", headers);
+      if (!result.ok) {
+        setError(`Failed to fetch models (${result.error || "unknown error"})`);
+        return;
+      }
+      const parsed = JSON.parse(result.data);
+      const list: FetchedModel[] = (parsed.data || parsed.models || []).map((m: { id: string; name?: string }) => ({
+        id: m.id,
+        name: m.name,
+      }));
+      list.sort((a, b) => (a.name || a.id).localeCompare(b.name || b.id));
+      setModels(list);
+      setHasFetched(true);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : "Failed to parse response");
+    } finally {
+      setIsLoading(false);
+    }
+  }, [baseURL, modelsEndpoint, apiKey, providerId]);
+
+  // Auto-fetch when dropdown first opens
+  useEffect(() => {
+    if (isOpen && canFetch && !hasFetched && !isLoading) {
+      void fetchModels();
+    }
+  }, [isOpen, canFetch, hasFetched, isLoading, fetchModels]);
+
+  // Filter models by current input value (inline autocomplete)
+  const suggestions = useMemo(() => {
+    if (!hasFetched || models.length === 0) return [];
+    if (!value.trim()) return models;
+    const q = value.toLowerCase();
+    return models.filter((m) =>
+      m.id.toLowerCase().includes(q) || (m.name && m.name.toLowerCase().includes(q)),
+    );
+  }, [models, value, hasFetched]);
+
+  const showSuggestions = isOpen && canFetch;
+
+  return (
+    <div className="relative">
+      <div className="flex items-center gap-2">
+        <div className="relative flex-1">
+          <input
+            type="text"
+            value={value}
+            onChange={(e) => {
+              onChange(e.target.value);
+              if (canFetch && hasFetched && !isOpen) setIsOpen(true);
+            }}
+            onFocus={() => { if (canFetch) setIsOpen(true); }}
+            onBlur={() => { setIsOpen(false); }}
+            placeholder={placeholder ?? (canFetch ? t('ai.providers.searchModel') : t('ai.providers.defaultModel.placeholder'))}
+            className={cn(
+              "w-full h-8 rounded-md border border-input bg-background px-3 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring",
+              canFetch && "pr-8",
+            )}
+          />
+          {canFetch && (
+            <button
+              type="button"
+              onMouseDown={(e) => { e.preventDefault(); setIsOpen(!isOpen); }}
+              className="absolute right-2 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground"
+            >
+              <ChevronDown size={14} className={cn("transition-transform", isOpen && "rotate-180")} />
+            </button>
+          )}
+        </div>
+        {canFetch && (
+          <Button
+            variant="outline"
+            size="sm"
+            onClick={() => { setHasFetched(false); void fetchModels(); }}
+            disabled={isLoading}
+            className="shrink-0 px-2"
+            title={t('ai.providers.refreshModels')}
+          >
+            <RefreshCw size={14} className={isLoading ? "animate-spin" : ""} />
+          </Button>
+        )}
+      </div>
+
+      {/* Suggestions dropdown */}
+      {showSuggestions && (
+        <div className="absolute top-full left-0 right-0 mt-1 z-[101] rounded-md border border-border bg-popover shadow-md">
+          <div className="max-h-60 overflow-y-auto">
+            {isLoading ? (
+              <div className="px-3 py-3 text-center text-xs text-muted-foreground">
+                <RefreshCw size={14} className="animate-spin inline mr-1.5" />
+                {t('ai.providers.loadingModels')}
+              </div>
+            ) : error ? (
+              <div className="px-3 py-3 text-center text-xs text-destructive">{error}</div>
+            ) : suggestions.length === 0 ? (
+              <div className="px-3 py-3 text-center text-xs text-muted-foreground">
+                {hasFetched ? t('ai.providers.noMatchingModels') : t('ai.providers.clickToLoadModels')}
+              </div>
+            ) : (
+              suggestions.slice(0, 100).map((m) => (
+                <button
+                  key={m.id}
+                  onMouseDown={(e) => {
+                    e.preventDefault();
+                    onChange(m.id);
+                    setIsOpen(false);
+                  }}
+                  className={cn(
+                    "w-full text-left px-3 py-1.5 text-xs hover:bg-accent transition-colors flex items-center justify-between gap-2",
+                    m.id === value && "bg-accent",
+                  )}
+                >
+                  <span className="font-mono truncate">{m.id}</span>
+                  {m.id === value && <Check size={12} className="text-primary shrink-0" />}
+                </button>
+              ))
+            )}
+            {suggestions.length > 100 && (
+              <div className="px-3 py-2 text-center text-[10px] text-muted-foreground border-t border-border/40">
+                {t('ai.providers.showingModels').replace('{count}', String(suggestions.length))}
+              </div>
+            )}
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};

components/settings/tabs/ai/ProviderCard.tsx

@@ -0,0 +1,95 @@
+import React from "react";
+import { Pencil, Trash2 } from "lucide-react";
+import type { ProviderConfig } from "../../../../infrastructure/ai/types";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Toggle } from "../../settings-ui";
+import { cn } from "../../../../lib/utils";
+import { ProviderIconBadge } from "./ProviderIconBadge";
+import { ProviderConfigForm } from "./ProviderConfigForm";
+
+export const ProviderCard: React.FC<{
+  provider: ProviderConfig;
+  isActive: boolean;
+  onToggleEnabled: (enabled: boolean) => void;
+  onEdit: () => void;
+  onRemove: () => void;
+  onUpdate: (updates: Partial<ProviderConfig>) => void;
+  isEditing: boolean;
+  onCancelEdit: () => void;
+}> = ({ provider, isActive, onToggleEnabled, onEdit, onRemove, onUpdate, isEditing, onCancelEdit }) => {
+  const { t } = useI18n();
+  const hasApiKey = !!provider.apiKey;
+
+  return (
+    <div
+      className={cn(
+        "rounded-lg border p-4 transition-colors",
+        isActive ? "border-primary/50 bg-primary/5" : "border-border/60 bg-muted/20",
+      )}
+    >
+      <div className="flex items-center gap-3">
+        {/* Provider icon */}
+        <ProviderIconBadge providerId={provider.providerId} />
+
+        {/* Info */}
+        <div className="flex-1 min-w-0">
+          <div className="flex items-center gap-2">
+            <span className="text-sm font-medium truncate">{provider.name}</span>
+            {isActive && (
+              <span className="text-[10px] px-1.5 py-0.5 rounded-full bg-primary/20 text-primary font-medium">
+                {t('ai.providers.active')}
+              </span>
+            )}
+          </div>
+          <div className="flex items-center gap-2 mt-0.5">
+            <span
+              className={cn(
+                "text-xs",
+                hasApiKey ? "text-emerald-500" : "text-muted-foreground",
+              )}
+            >
+              {hasApiKey ? t('ai.providers.apiKeyConfigured') : t('ai.providers.noApiKey')}
+            </span>
+            {provider.defaultModel && (
+              <>
+                <span className="text-muted-foreground text-xs">|</span>
+                <span className="text-xs text-muted-foreground truncate">{provider.defaultModel}</span>
+              </>
+            )}
+          </div>
+        </div>
+
+        {/* Actions */}
+        <div className="flex items-center gap-1 shrink-0">
+          <button
+            onClick={onEdit}
+            className="p-1.5 rounded-md text-muted-foreground hover:text-foreground hover:bg-muted transition-colors"
+            title={t('ai.providers.configure')}
+          >
+            <Pencil size={14} />
+          </button>
+          <button
+            onClick={onRemove}
+            className="p-1.5 rounded-md text-muted-foreground hover:text-destructive hover:bg-destructive/10 transition-colors"
+            title={t('ai.providers.remove')}
+          >
+            <Trash2 size={14} />
+          </button>
+          <Toggle checked={provider.enabled} onChange={onToggleEnabled} />
+        </div>
+      </div>
+
+      {/* Expandable config form */}
+      {isEditing && (
+        <ProviderConfigForm
+          provider={provider}
+          onSave={(updates) => {
+            onUpdate(updates);
+            onCancelEdit();
+          }}
+          onCancel={onCancelEdit}
+        />
+      )}
+    </div>
+  );
+};

components/settings/tabs/ai/ProviderConfigForm.tsx

@@ -0,0 +1,138 @@
+import React, { useCallback, useEffect, useState } from "react";
+import { Check, Eye, EyeOff } from "lucide-react";
+import type { ProviderConfig } from "../../../../infrastructure/ai/types";
+import { PROVIDER_PRESETS } from "../../../../infrastructure/ai/types";
+import { encryptField, decryptField } from "../../../../infrastructure/persistence/secureFieldAdapter";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Button } from "../../../ui/button";
+import type { ProviderFormState } from "./types";
+import { ModelSelector } from "./ModelSelector";
+
+export const ProviderConfigForm: React.FC<{
+  provider: ProviderConfig;
+  onSave: (updates: Partial<ProviderConfig>) => void;
+  onCancel: () => void;
+}> = ({ provider, onSave, onCancel }) => {
+  const { t } = useI18n();
+  const [form, setForm] = useState<ProviderFormState>({
+    name: provider.name ?? PROVIDER_PRESETS[provider.providerId]?.name ?? "",
+    apiKey: "",
+    baseURL: provider.baseURL ?? PROVIDER_PRESETS[provider.providerId]?.defaultBaseURL ?? "",
+    defaultModel: provider.defaultModel ?? "",
+  });
+  const isCustom = provider.providerId === "custom";
+  const [showApiKey, setShowApiKey] = useState(false);
+  const [isDecrypting, setIsDecrypting] = useState(false);
+
+  const preset = PROVIDER_PRESETS[provider.providerId];
+
+  // Decrypt and load existing API key on mount
+  useEffect(() => {
+    if (provider.apiKey) {
+      setIsDecrypting(true);
+      decryptField(provider.apiKey)
+        .then((decrypted) => {
+          setForm((prev) => ({ ...prev, apiKey: decrypted ?? "" }));
+        })
+        .catch(() => {
+          // If decryption fails, show raw value
+          setForm((prev) => ({ ...prev, apiKey: provider.apiKey ?? "" }));
+        })
+        .finally(() => setIsDecrypting(false));
+    }
+  }, [provider.apiKey]);
+
+  const handleSave = useCallback(async () => {
+    const updates: Partial<ProviderConfig> = {
+      baseURL: form.baseURL || undefined,
+      defaultModel: form.defaultModel || undefined,
+      ...(isCustom && form.name.trim() ? { name: form.name.trim() } : {}),
+    };
+
+    // Encrypt API key before saving
+    if (form.apiKey) {
+      updates.apiKey = await encryptField(form.apiKey);
+    } else {
+      updates.apiKey = undefined;
+    }
+
+    onSave(updates);
+  }, [form, onSave, isCustom]);
+
+  return (
+    <div className="mt-3 space-y-3 border-t border-border/40 pt-3">
+      {/* Name (custom providers only) */}
+      {isCustom && (
+        <div className="space-y-1.5">
+          <label className="text-xs font-medium text-muted-foreground">{t('ai.providers.name')}</label>
+          <input
+            type="text"
+            value={form.name}
+            onChange={(e) => setForm((prev) => ({ ...prev, name: e.target.value }))}
+            placeholder={t('ai.providers.name.placeholder')}
+            className="w-full h-8 rounded-md border border-input bg-background px-3 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+          />
+        </div>
+      )}
+      {/* API Key */}
+      <div className="space-y-1.5">
+        <label className="text-xs font-medium text-muted-foreground">{t('ai.providers.apiKey')}</label>
+        <div className="flex items-center gap-2">
+          <div className="relative flex-1">
+            <input
+              type={showApiKey ? "text" : "password"}
+              value={isDecrypting ? "" : form.apiKey}
+              onChange={(e) => setForm((prev) => ({ ...prev, apiKey: e.target.value }))}
+              placeholder={isDecrypting ? t('ai.providers.apiKey.decrypting') : t('ai.providers.apiKey.placeholder')}
+              disabled={isDecrypting}
+              className="w-full h-8 rounded-md border border-input bg-background px-3 pr-9 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:opacity-50"
+            />
+            <button
+              type="button"
+              onClick={() => setShowApiKey(!showApiKey)}
+              className="absolute right-2 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground"
+            >
+              {showApiKey ? <EyeOff size={14} /> : <Eye size={14} />}
+            </button>
+          </div>
+        </div>
+      </div>
+
+      {/* Base URL */}
+      <div className="space-y-1.5">
+        <label className="text-xs font-medium text-muted-foreground">{t('ai.providers.baseUrl')}</label>
+        <input
+          type="text"
+          value={form.baseURL}
+          onChange={(e) => setForm((prev) => ({ ...prev, baseURL: e.target.value }))}
+          placeholder={preset?.defaultBaseURL || "https://"}
+          className="w-full h-8 rounded-md border border-input bg-background px-3 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+        />
+      </div>
+
+      {/* Default Model */}
+      <div className="space-y-1.5">
+        <label className="text-xs font-medium text-muted-foreground">{t('ai.providers.defaultModel')}</label>
+        <ModelSelector
+          value={form.defaultModel}
+          onChange={(val) => setForm((prev) => ({ ...prev, defaultModel: val }))}
+          baseURL={form.baseURL || preset?.defaultBaseURL || ""}
+          modelsEndpoint={preset?.modelsEndpoint}
+          apiKey={form.apiKey}
+          providerId={provider.providerId}
+        />
+      </div>
+
+      {/* Actions */}
+      <div className="flex items-center gap-2 pt-1">
+        <Button variant="default" size="sm" onClick={() => void handleSave()}>
+          <Check size={14} className="mr-1.5" />
+          {t('common.save')}
+        </Button>
+        <Button variant="ghost" size="sm" onClick={onCancel}>
+          {t('common.cancel')}
+        </Button>
+      </div>
+    </div>
+  );
+};

components/settings/tabs/ai/ProviderIconBadge.tsx

@@ -0,0 +1,28 @@
+import React from "react";
+import { cn } from "../../../../lib/utils";
+import type { SettingsIconId } from "./types";
+import { SETTINGS_ICON_PATHS, SETTINGS_ICON_COLORS } from "./types";
+
+export const ProviderIconBadge: React.FC<{
+  providerId: SettingsIconId;
+  size?: "sm" | "md";
+}> = ({ providerId, size = "md" }) => (
+  <div
+    className={cn(
+      "rounded-md flex items-center justify-center shrink-0 overflow-hidden",
+      size === "sm" ? "w-5 h-5" : "w-8 h-8",
+      SETTINGS_ICON_COLORS[providerId],
+    )}
+  >
+    <img
+      src={SETTINGS_ICON_PATHS[providerId]}
+      alt=""
+      aria-hidden="true"
+      draggable={false}
+      className={cn(
+        "object-contain brightness-0 invert",
+        size === "sm" ? "w-3 h-3" : "w-4 h-4",
+      )}
+    />
+  </div>
+);

components/settings/tabs/ai/SafetySettings.tsx

@@ -0,0 +1,204 @@
+import React, { useCallback, useState } from "react";
+import { Plus, Shield, X } from "lucide-react";
+import type { AIPermissionMode } from "../../../../infrastructure/ai/types";
+import { DEFAULT_COMMAND_BLOCKLIST } from "../../../../infrastructure/ai/types";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Button } from "../../../ui/button";
+import { Select, SettingRow } from "../../settings-ui";
+
+export const SafetySettings: React.FC<{
+  globalPermissionMode: AIPermissionMode;
+  setGlobalPermissionMode: (mode: AIPermissionMode) => void;
+  commandBlocklist: string[];
+  setCommandBlocklist: (value: string[]) => void;
+  commandTimeout: number;
+  setCommandTimeout: (value: number) => void;
+  maxIterations: number;
+  setMaxIterations: (value: number) => void;
+}> = ({
+  globalPermissionMode,
+  setGlobalPermissionMode,
+  commandBlocklist,
+  setCommandBlocklist,
+  commandTimeout,
+  setCommandTimeout,
+  maxIterations,
+  setMaxIterations,
+}) => {
+  const { t } = useI18n();
+  const [regexErrors, setRegexErrors] = useState<Record<number, string>>({});
+
+  const validatePattern = useCallback((pattern: string, idx: number): boolean => {
+    if (!pattern) {
+      setRegexErrors((prev) => {
+        const next = { ...prev };
+        delete next[idx];
+        return next;
+      });
+      return true;
+    }
+    try {
+      new RegExp(pattern);
+      setRegexErrors((prev) => {
+        const next = { ...prev };
+        delete next[idx];
+        return next;
+      });
+      return true;
+    } catch (e) {
+      setRegexErrors((prev) => ({
+        ...prev,
+        [idx]: e instanceof Error ? e.message : String(e),
+      }));
+      return false;
+    }
+  }, []);
+
+  const handlePatternChange = useCallback((value: string, idx: number) => {
+    const next = [...commandBlocklist];
+    next[idx] = value;
+    validatePattern(value, idx);
+    setCommandBlocklist(next);
+  }, [commandBlocklist, setCommandBlocklist, validatePattern]);
+
+  const permissionModeOptions = [
+    { value: "observer", label: t('ai.safety.permissionMode.observer') },
+    { value: "confirm", label: t('ai.safety.permissionMode.confirm') },
+    { value: "autonomous", label: t('ai.safety.permissionMode.autonomous') },
+  ];
+
+  return (
+    <div className="space-y-4">
+      <div className="flex items-center gap-2">
+        <Shield size={18} className="text-muted-foreground" />
+        <h3 className="text-base font-medium">{t('ai.safety.title')}</h3>
+      </div>
+
+      <div className="bg-muted/30 rounded-lg p-4 space-y-1">
+        <SettingRow
+          label={t('ai.safety.permissionMode')}
+          description={t('ai.safety.permissionMode.description')}
+        >
+          <Select
+            value={globalPermissionMode}
+            options={permissionModeOptions}
+            onChange={(val) => setGlobalPermissionMode(val as AIPermissionMode)}
+            className="w-64"
+          />
+        </SettingRow>
+
+        <SettingRow
+          label={t('ai.safety.commandTimeout')}
+          description={t('ai.safety.commandTimeout.description')}
+        >
+          <div className="flex items-center gap-2">
+            <input
+              type="number"
+              value={commandTimeout}
+              onChange={(e) => {
+                const val = parseInt(e.target.value, 10);
+                if (!isNaN(val) && val > 0) setCommandTimeout(val);
+              }}
+              min={1}
+              max={3600}
+              className="w-20 h-9 rounded-md border border-input bg-background px-3 text-sm text-right focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+            />
+            <span className="text-xs text-muted-foreground">{t('ai.safety.commandTimeout.unit')}</span>
+          </div>
+        </SettingRow>
+
+        <SettingRow
+          label={t('ai.safety.maxIterations')}
+          description={t('ai.safety.maxIterations.description')}
+        >
+          <input
+            type="number"
+            value={maxIterations}
+            onChange={(e) => {
+              const val = parseInt(e.target.value, 10);
+              if (!isNaN(val) && val > 0) setMaxIterations(val);
+            }}
+            min={1}
+            max={100}
+            className="w-20 h-9 rounded-md border border-input bg-background px-3 text-sm text-right focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+          />
+        </SettingRow>
+      </div>
+
+      {/* Command Blocklist */}
+      <div className="bg-muted/30 rounded-lg p-4 space-y-3">
+        <div className="flex items-center justify-between">
+          <div>
+            <p className="text-sm font-medium">{t('ai.safety.blocklist')}</p>
+            <p className="text-xs text-muted-foreground">
+              {t('ai.safety.blocklist.description')}
+            </p>
+          </div>
+          <Button
+            variant="ghost"
+            size="sm"
+            className="text-xs"
+            onClick={() => { setCommandBlocklist([...DEFAULT_COMMAND_BLOCKLIST]); setRegexErrors({}); }}
+          >
+            {t('ai.safety.blocklist.reset')}
+          </Button>
+        </div>
+
+        <div className="space-y-1.5">
+          {commandBlocklist.map((pattern, idx) => (
+            <div key={idx} className="space-y-0.5">
+              <div className="flex items-center gap-2">
+                <input
+                  type="text"
+                  value={pattern}
+                  onChange={(e) => handlePatternChange(e.target.value, idx)}
+                  className={`flex-1 h-8 rounded-md border bg-background px-3 text-xs font-mono focus-visible:outline-none focus-visible:ring-1 ${
+                    regexErrors[idx]
+                      ? 'border-destructive focus-visible:ring-destructive'
+                      : 'border-input focus-visible:ring-ring'
+                  }`}
+                  placeholder={t('ai.safety.blocklist.placeholder')}
+                />
+                <button
+                  onClick={() => {
+                    const next = commandBlocklist.filter((_, i) => i !== idx);
+                    setCommandBlocklist(next);
+                    setRegexErrors((prev) => {
+                      const updated: Record<number, string> = {};
+                      for (const [k, v] of Object.entries(prev)) {
+                        const ki = Number(k);
+                        if (ki < idx) updated[ki] = v as string;
+                        else if (ki > idx) updated[ki - 1] = v as string;
+                      }
+                      return updated;
+                    });
+                  }}
+                  className="p-1 rounded hover:bg-destructive/10 text-muted-foreground hover:text-destructive transition-colors"
+                >
+                  <X size={14} />
+                </button>
+              </div>
+              {regexErrors[idx] && (
+                <p className="text-[11px] text-destructive pl-1">{regexErrors[idx]}</p>
+              )}
+            </div>
+          ))}
+        </div>
+
+        <Button
+          variant="outline"
+          size="sm"
+          className="text-xs"
+          onClick={() => setCommandBlocklist([...commandBlocklist, ''])}
+        >
+          <Plus size={14} className="mr-1" />
+          {t('ai.safety.blocklist.add')}
+        </Button>
+      </div>
+
+      <p className="text-xs text-muted-foreground">
+        {t('ai.safety.note')}
+      </p>
+    </div>
+  );
+};

components/settings/tabs/ai/index.ts

@@ -0,0 +1,8 @@
+export { ProviderIconBadge } from "./ProviderIconBadge";
+export { ModelSelector } from "./ModelSelector";
+export { ProviderConfigForm } from "./ProviderConfigForm";
+export { ProviderCard } from "./ProviderCard";
+export { AddProviderDropdown } from "./AddProviderDropdown";
+export { CodexConnectionCard } from "./CodexConnectionCard";
+export { ClaudeCodeCard } from "./ClaudeCodeCard";
+export { SafetySettings } from "./SafetySettings";

components/settings/tabs/ai/types.ts

@@ -0,0 +1,128 @@
+/**
+ * Shared types for AI settings sub-components
+ */
+import type {
+  AIProviderId,
+  ExternalAgentConfig,
+} from "../../../../infrastructure/ai/types";
+
+export type CodexIntegrationState =
+  | "connected_chatgpt"
+  | "connected_api_key"
+  | "not_logged_in"
+  | "unknown";
+
+export interface CodexIntegrationStatus {
+  state: CodexIntegrationState;
+  isConnected: boolean;
+  rawOutput: string;
+  exitCode: number | null;
+}
+
+export type CodexLoginState = "running" | "success" | "error" | "cancelled";
+
+export interface CodexLoginSession {
+  sessionId: string;
+  state: CodexLoginState;
+  url: string | null;
+  output: string;
+  error: string | null;
+  exitCode: number | null;
+}
+
+export interface AgentPathInfo {
+  path: string | null;
+  version: string | null;
+  available: boolean;
+}
+
+export interface ProviderFormState {
+  name: string;
+  apiKey: string;
+  baseURL: string;
+  defaultModel: string;
+}
+
+export interface FetchedModel {
+  id: string;
+  name?: string;
+}
+
+export interface FetchBridge {
+  aiFetch?: (url: string, method?: string, headers?: Record<string, string>, body?: string) => Promise<{ ok: boolean; data: string; error?: string }>;
+  aiAllowlistAddHost?: (baseURL: string) => Promise<{ ok: boolean }>;
+}
+
+export interface NetcattyAiBridge {
+  aiCodexGetIntegration?: () => Promise<CodexIntegrationStatus>;
+  aiCodexStartLogin?: () => Promise<{ ok: boolean; session?: CodexLoginSession; error?: string }>;
+  aiCodexGetLoginSession?: (sessionId: string) => Promise<{ ok: boolean; session?: CodexLoginSession; error?: string }>;
+  aiCodexCancelLogin?: (sessionId: string) => Promise<{ ok: boolean; found?: boolean; session?: CodexLoginSession; error?: string }>;
+  aiCodexLogout?: () => Promise<{ ok: boolean; state?: CodexIntegrationState; isConnected?: boolean; rawOutput?: string; logoutOutput?: string; error?: string }>;
+  aiResolveCli?: (params: { command: string; customPath?: string }) => Promise<AgentPathInfo>;
+  openExternal?: (url: string) => Promise<void>;
+}
+
+// Agent default configs for registration in externalAgents
+export const AGENT_DEFAULTS: Record<string, Omit<ExternalAgentConfig, "id" | "command" | "enabled">> = {
+  codex: {
+    name: "Codex CLI",
+    args: ["exec", "--full-auto", "--json", "{prompt}"],
+    icon: "openai",
+    acpCommand: "codex-acp",
+    acpArgs: [],
+  },
+  claude: {
+    name: "Claude Code",
+    args: ["-p", "--output-format", "text", "{prompt}"],
+    icon: "claude",
+    acpCommand: "claude-code-acp",
+    acpArgs: [],
+  },
+};
+
+// ---------------------------------------------------------------------------
+// Bridge helpers
+// ---------------------------------------------------------------------------
+
+export function getBridge(): NetcattyAiBridge | undefined {
+  return (window as unknown as { netcatty?: NetcattyAiBridge }).netcatty;
+}
+
+export function getFetchBridge(): FetchBridge | undefined {
+  return (window as unknown as { netcatty?: FetchBridge }).netcatty;
+}
+
+export function normalizeCodexBridgeError(error: unknown): string {
+  const message = error instanceof Error ? error.message : String(error);
+  if (message.includes("No handler registered for 'netcatty:ai:codex:")) {
+    return "Codex main-process handlers are not loaded yet. Fully restart Netcatty, or restart the Electron dev process, then try again.";
+  }
+  return message;
+}
+
+// ---------------------------------------------------------------------------
+// Provider icon helper
+// ---------------------------------------------------------------------------
+
+export type SettingsIconId = AIProviderId | "claude";
+
+export const SETTINGS_ICON_PATHS: Record<SettingsIconId, string> = {
+  openai: "/ai/providers/openai.svg",
+  anthropic: "/ai/providers/anthropic.svg",
+  claude: "/ai/agents/claude.svg",
+  google: "/ai/providers/google.svg",
+  ollama: "/ai/providers/ollama.svg",
+  openrouter: "/ai/providers/openrouter.svg",
+  custom: "/ai/providers/custom.svg",
+};
+
+export const SETTINGS_ICON_COLORS: Record<SettingsIconId, string> = {
+  openai: "bg-emerald-600",
+  anthropic: "bg-orange-600",
+  claude: "bg-orange-600",
+  google: "bg-blue-600",
+  ollama: "bg-purple-600",
+  openrouter: "bg-pink-600",
+  custom: "bg-zinc-600",
+};

components/sftp-modal/SftpModalHeader.tsx

@@ -1,11 +1,10 @@
 import React, { useEffect, useState } from "react";
-import { ArrowUp, Bookmark, Check, ChevronRight, Eye, EyeOff, FilePlus, FolderPlus, FolderUp, Home, Languages, MoreHorizontal, RefreshCw, Trash2, Upload } from "lucide-react";
+import { ArrowUp, Bookmark, Check, ChevronRight, Eye, EyeOff, FilePlus, FolderPlus, FolderUp, Home, Languages, MoreHorizontal, RefreshCw, Trash2, Upload, X } from "lucide-react";
 import { cn } from "../../lib/utils";
 import type { Host, SftpFilenameEncoding } from "../../types";
 import { useSftpBookmarks } from "../sftp/hooks/useSftpBookmarks";
 import { DistroAvatar } from "../DistroAvatar";
 import { Button } from "../ui/button";
-import { DialogHeader, DialogTitle } from "../ui/dialog";
 import { Input } from "../ui/input";
 import { Popover, PopoverClose, PopoverContent, PopoverTrigger } from "../ui/popover";
 import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from "../ui/tooltip";
@@ -55,6 +54,7 @@ interface SftpModalHeaderProps {
   onToggleShowHiddenFiles: () => void;
   onUpdateHost?: (host: Host) => void;
   onNavigateToBookmark?: (path: string) => void;
+  onClose?: () => void;
 }
 
 export const SftpModalHeader: React.FC<SftpModalHeaderProps> = ({
@@ -97,6 +97,7 @@ export const SftpModalHeader: React.FC<SftpModalHeaderProps> = ({
   onToggleShowHiddenFiles,
   onUpdateHost,
   onNavigateToBookmark,
+  onClose,
 }) => {
   // Delay tooltip activation to prevent flickering when modal opens
   const [tooltipsReady, setTooltipsReady] = useState(false);
@@ -126,24 +127,35 @@ export const SftpModalHeader: React.FC<SftpModalHeaderProps> = ({
 
   return (
     <>
-      <DialogHeader className="px-4 py-3 border-b border-border/60 flex-shrink-0">
-        <div className="flex items-center gap-3 pr-8">
+      <div className="px-4 py-3 border-b border-border/60 flex-shrink-0">
+        <div className="flex items-center gap-3">
           <DistroAvatar
             host={host}
             fallback={host.label.slice(0, 2).toUpperCase()}
             className="h-8 w-8"
+            size="sm"
           />
           <div className="flex-1 min-w-0">
-            <DialogTitle className="text-sm font-semibold">
+            <div className="text-sm font-semibold">
               {host.label}
-            </DialogTitle>
+            </div>
             <div className="text-xs text-muted-foreground font-mono">
               {credentials.username || "root"}@{credentials.hostname}:
               {credentials.port || 22}
             </div>
           </div>
+          {onClose && (
+            <Button
+              variant="ghost"
+              size="icon"
+              className="h-6 w-6 shrink-0"
+              onClick={onClose}
+            >
+              <X size={14} />
+            </Button>
+          )}
         </div>
-      </DialogHeader>
+      </div>
 
       <TooltipProvider delayDuration={500} skipDelayDuration={800} disableHoverableContent>
         <div className="px-4 py-2 border-b border-border/60 flex items-center gap-2 flex-shrink-0 bg-muted/30">

components/sftp-modal/hooks/useSftpModalSession.ts

@@ -89,6 +89,7 @@ export const useSftpModalSession = ({
   const sftpIdRef = useRef<string | null>(null);
   const closingPromiseRef = useRef<Promise<void> | null>(null);
   const initializedRef = useRef(false);
+  const initializingRef = useRef(false);
   const lastInitialPathRef = useRef<string | undefined>(undefined);
   const localHomeRef = useRef<string | null>(null);
 
@@ -316,92 +317,109 @@ export const useSftpModalSession = ({
     if (open) {
       if (!initializedRef.current || lastInitialPathRef.current !== initialPath) {
         initializedRef.current = true;
+        initializingRef.current = true;
         lastInitialPathRef.current = initialPath;
         onClearSelection();
         setLoading(true);
 
         if (isLocalSession) {
           (async () => {
-            const homePath = await getHomeDir();
-            localHomeRef.current = homePath ?? null;
-            const startPath = initialPath || homePath || "/";
             try {
-              const list = await listLocalDir(startPath);
-              setCurrentPath(startPath);
-              setFiles(list);
-              dirCacheRef.current.set(`${host.id}::${startPath}`, {
-                files: list,
-                timestamp: Date.now(),
-              });
-            } catch (e) {
-              toast.error(
-                e instanceof Error ? e.message : t("sftp.error.loadFailed"),
-                "SFTP",
-              );
+              const homePath = await getHomeDir();
+              localHomeRef.current = homePath ?? null;
+              const startPath = initialPath || homePath || "/";
+              try {
+                const list = await listLocalDir(startPath);
+                setCurrentPath(startPath);
+                setFiles(list);
+                dirCacheRef.current.set(`${host.id}::${startPath}`, {
+                  files: list,
+                  timestamp: Date.now(),
+                });
+              } catch (e) {
+                toast.error(
+                  e instanceof Error ? e.message : t("sftp.error.loadFailed"),
+                  "SFTP",
+                );
+              } finally {
+                setLoading(false);
+              }
             } finally {
-              setLoading(false);
+              initializingRef.current = false;
             }
           })();
           return;
         }
 
         (async () => {
-          const homePath = await getHomeDir();
-          localHomeRef.current = homePath ?? null;
-          if (initialPath) {
-            try {
-              const sftpId = await ensureSftp();
-              const list = await listSftp(sftpId, initialPath);
-              setCurrentPath(initialPath);
-              setFiles(list);
-              dirCacheRef.current.set(`${host.id}::${initialPath}`, {
-                files: list,
-                timestamp: Date.now(),
-              });
-              setLoading(false);
-              return;
-            } catch {
-              logger.warn(
-                `[SFTP] Initial path ${initialPath} not accessible, falling back to home`,
-              );
-            }
-          }
-
           try {
-            const sftpId = await ensureSftp();
-            const list = await listSftp(sftpId, homePath || "/");
-            setCurrentPath(homePath || "/");
-            setFiles(list);
-            dirCacheRef.current.set(`${host.id}::${homePath || "/"}`, {
-              files: list,
-              timestamp: Date.now(),
-            });
-            setLoading(false);
-          } catch {
-            logger.warn(`[SFTP] Home ${homePath} not accessible, using /`);
+            const homePath = await getHomeDir();
+            localHomeRef.current = homePath ?? null;
+            if (initialPath) {
+              try {
+                const sftpId = await ensureSftp();
+                const list = await listSftp(sftpId, initialPath);
+                setCurrentPath(initialPath);
+                setFiles(list);
+                dirCacheRef.current.set(`${host.id}::${initialPath}`, {
+                  files: list,
+                  timestamp: Date.now(),
+                });
+                setLoading(false);
+                return;
+              } catch {
+                logger.warn(
+                  `[SFTP] Initial path ${initialPath} not accessible, falling back to home`,
+                );
+              }
+            }
+
             try {
               const sftpId = await ensureSftp();
-              const list = await listSftp(sftpId, "/");
-              setCurrentPath("/");
+              const list = await listSftp(sftpId, homePath || "/");
+              setCurrentPath(homePath || "/");
               setFiles(list);
-              dirCacheRef.current.set(`${host.id}::/`, {
+              dirCacheRef.current.set(`${host.id}::${homePath || "/"}`, {
                 files: list,
                 timestamp: Date.now(),
               });
-            } catch (e) {
-              logger.error("[SFTP] Failed to load root directory", e);
-              toast.error(t("sftp.error.loadFailed"), "SFTP");
-            } finally {
               setLoading(false);
+            } catch {
+              logger.warn(`[SFTP] Home ${homePath} not accessible, using /`);
+              try {
+                const sftpId = await ensureSftp();
+                const list = await listSftp(sftpId, "/");
+                setCurrentPath("/");
+                setFiles(list);
+                dirCacheRef.current.set(`${host.id}::/`, {
+                  files: list,
+                  timestamp: Date.now(),
+                });
+              } catch (e) {
+                logger.error("[SFTP] Failed to load root directory", e);
+                toast.error(t("sftp.error.loadFailed"), "SFTP");
+              } finally {
+                setLoading(false);
+              }
             }
+          } finally {
+            initializingRef.current = false;
           }
         })();
         return;
       }
-      void loadFiles(currentPath);
+      // Skip redundant loadFiles while async initialization is still in flight.
+      // Without this guard, dependency changes (e.g. loadFiles recreation from
+      // files.length change) can re-trigger this effect and call loadFiles with
+      // the stale currentPath before the initialization IIFE has resolved and
+      // updated currentPathRef — causing uploads to target the wrong directory.
+      if (!initializingRef.current) {
+        void loadFiles(currentPath);
+      }
     } else {
       loadSeqRef.current += 1;
       initializedRef.current = false;
+      initializingRef.current = false;
     }
   }, [
     closeSftpSession,

components/sftp/SftpOverlays.tsx

@@ -2,10 +2,10 @@ import React from "react";
 import type { Host, SftpFileEntry } from "../../types";
 import type { FileOpenerType, SystemAppInfo } from "../../lib/sftpFileUtils";
 import type { useSftpState } from "../../application/state/useSftpState";
-import { Button } from "../ui/button";
 import FileOpenerDialog from "../FileOpenerDialog";
 import TextEditorModal from "../TextEditorModal";
-import { SftpConflictDialog, SftpHostPicker, SftpPermissionsDialog, SftpTransferItem } from "./index";
+import { SftpConflictDialog, SftpHostPicker, SftpPermissionsDialog } from "./index";
+import { SftpTransferQueue } from "./SftpTransferQueue";
 
 type SftpState = ReturnType<typeof useSftpState>;
 
@@ -13,6 +13,7 @@ interface SftpOverlaysProps {
   hosts: Host[];
   sftp: SftpState;
   visibleTransfers: SftpState["transfers"];
+  showTransferQueue?: boolean;
   showHostPickerLeft: boolean;
   showHostPickerRight: boolean;
   hostSearchLeft: string;
@@ -46,6 +47,7 @@ export const SftpOverlays: React.FC<SftpOverlaysProps> = ({
   hosts,
   sftp,
   visibleTransfers,
+  showTransferQueue = true,
   showHostPickerLeft,
   showHostPickerRight,
   hostSearchLeft,
@@ -98,49 +100,8 @@ export const SftpOverlays: React.FC<SftpOverlaysProps> = ({
         onSelectHost={handleHostSelectRight}
       />
 
-      {/* Transfer status area - shows folder uploads and file transfers */}
-      {sftp.transfers.length > 0 && (
-        <div className="border-t border-border/70 bg-secondary/80 backdrop-blur-sm shrink-0">
-          <div className="flex items-center justify-between px-4 py-2 text-xs text-muted-foreground border-b border-border/40">
-            <span className="font-medium">
-              Transfers
-              {sftp.activeTransfersCount > 0 && (
-                <span className="ml-2 text-primary">
-                  ({sftp.activeTransfersCount} active)
-                </span>
-              )}
-            </span>
-            {sftp.transfers.some(
-              (t) => t.status === "completed" || t.status === "cancelled",
-            ) && (
-                <Button
-                  variant="ghost"
-                  size="sm"
-                  className="h-6 px-2 text-xs"
-                  onClick={sftp.clearCompletedTransfers}
-                >
-                  Clear completed
-                </Button>
-              )}
-          </div>
-          <div className="max-h-40 overflow-auto">
-            {visibleTransfers.map((task) => (
-              <SftpTransferItem
-                key={task.id}
-                task={task}
-                onCancel={() => {
-                  // External uploads use a different cancel mechanism
-                  if (task.sourceConnectionId === "external") {
-                    sftp.cancelExternalUpload();
-                  }
-                  sftp.cancelTransfer(task.id);
-                }}
-                onRetry={() => sftp.retryTransfer(task.id)}
-                onDismiss={() => sftp.dismissTransfer(task.id)}
-              />
-            ))}
-          </div>
-        </div>
+      {showTransferQueue && (
+        <SftpTransferQueue sftp={sftp} visibleTransfers={visibleTransfers} />
       )}
 
       <SftpConflictDialog

components/sftp/SftpPaneToolbar.tsx

@@ -1,9 +1,11 @@
-import React from "react";
-import { Bookmark, Check, ChevronLeft, Eye, EyeOff, FilePlus, Folder, FolderPlus, Home, Languages, RefreshCw, Search, Trash2, X } from "lucide-react";
+import React, { useCallback, useEffect, useRef, useState } from "react";
+import { Bookmark, Check, Eye, EyeOff, FilePlus, Folder, FolderPlus, Home, Languages, MoreHorizontal, RefreshCw, Search, TerminalSquare, Trash2, X } from "lucide-react";
 import { Button } from "../ui/button";
 import { Input } from "../ui/input";
 import { Popover, PopoverClose, PopoverContent, PopoverTrigger } from "../ui/popover";
+import { Dropdown, DropdownContent, DropdownTrigger } from "../ui/dropdown";
 import { cn } from "../../lib/utils";
+import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from "../ui/tooltip";
 import { SftpBreadcrumb } from "./index";
 import type { SftpFilenameEncoding } from "../../types";
 import type { SftpPane } from "../../application/state/sftp/types";
@@ -12,7 +14,6 @@ import type { SftpBookmark } from "../../domain/models";
 interface SftpPaneToolbarProps {
   t: (key: string, params?: Record<string, unknown>) => string;
   pane: SftpPane;
-  onNavigateUp: () => void;
   onNavigateTo: (path: string) => void;
   onSetFilter: (value: string) => void;
   onSetFilenameEncoding: (encoding: SftpFilenameEncoding) => void;
@@ -49,12 +50,17 @@ interface SftpPaneToolbarProps {
   onDeleteBookmark: (id: string) => void;
   showHiddenFiles: boolean;
   onToggleShowHiddenFiles?: () => void;
+  onGoToTerminalCwd?: () => void;
 }
 
+// Prioritize breadcrumb path display. 6 action buttons need ~156px,
+// bookmark ~20px, padding ~16px. Collapse early so the breadcrumb
+// always gets at least ~200px of space.
+const COLLAPSE_WIDTH = 400;
+
 export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = ({
   t,
   pane,
-  onNavigateUp,
   onNavigateTo,
   onSetFilter,
   onSetFilenameEncoding,
@@ -90,308 +96,486 @@ export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = ({
   onDeleteBookmark,
   showHiddenFiles,
   onToggleShowHiddenFiles,
-}) => (
-  <>
-    {/* Toolbar - always visible when connected */}
-    <div className="h-7 px-2 flex items-center gap-1 border-b border-border/40 bg-secondary/20">
-      <Button
-        variant="ghost"
-        size="icon"
-        className="h-5 w-5"
-        onClick={onNavigateUp}
-        title={t("sftp.goUp")}
-      >
-        <ChevronLeft size={12} />
-      </Button>
+  onGoToTerminalCwd,
+}) => {
+  const outerRef = useRef<HTMLDivElement>(null);
+  const [collapsed, setCollapsed] = useState(false);
 
-      {/* Editable Breadcrumb with autocomplete */}
-      {isEditingPath ? (
-        <div className="relative flex-1">
-          <Input
-            ref={pathInputRef}
-            value={editingPathValue}
-            onChange={(e) => {
-              setEditingPathValue(e.target.value);
-              setShowPathSuggestions(true);
-              setPathSuggestionIndex(-1);
-            }}
-            onBlur={handlePathBlur}
-            onKeyDown={handlePathKeyDown}
-            onFocus={() => setShowPathSuggestions(true)}
-            className="h-5 w-full text-[10px] bg-background"
-            autoFocus
-          />
-          {showPathSuggestions && pathSuggestions.length > 0 && (
-            <div
-              ref={pathDropdownRef}
-              className="absolute top-full left-0 right-0 mt-1 bg-popover border border-border rounded-md shadow-lg z-50 max-h-48 overflow-auto"
-            >
-              {pathSuggestions.map((suggestion, idx) => (
-                <button
-                  key={suggestion.path}
-                  type="button"
-                  className={cn(
-                    "w-full px-3 py-2 text-left text-xs flex items-center gap-2 hover:bg-secondary/60 transition-colors",
-                    idx === pathSuggestionIndex && "bg-secondary/80",
-                  )}
-                  onMouseDown={(e) => {
-                    e.preventDefault();
-                    handlePathSubmit(suggestion.path);
-                  }}
-                >
-                  {suggestion.type === "folder" ? (
-                    <Folder size={12} className="text-primary shrink-0" />
-                  ) : (
-                    <Home
-                      size={12}
-                      className="text-muted-foreground shrink-0"
-                    />
-                  )}
-                  <span className="truncate font-mono">
-                    {suggestion.path}
-                  </span>
-                </button>
-              ))}
-            </div>
-          )}
-        </div>
-      ) : (
-        <div
-          className="flex-1 cursor-text hover:bg-secondary/50 rounded px-1 transition-colors"
-          onDoubleClick={handlePathDoubleClick}
-          title={t("sftp.path.doubleClickToEdit")}
-        >
-          <SftpBreadcrumb
-            path={pane.connection.currentPath}
-            onNavigate={onNavigateTo}
-            onHome={() =>
-              pane.connection?.homeDir &&
-              onNavigateTo(pane.connection.homeDir)
-            }
-          />
-        </div>
-      )}
+  // Observe the overall toolbar width to decide whether to collapse action buttons
+  useEffect(() => {
+    const el = outerRef.current;
+    if (!el) return;
+    const ro = new ResizeObserver((entries) => {
+      for (const entry of entries) {
+        setCollapsed(entry.contentRect.width < COLLAPSE_WIDTH);
+      }
+    });
+    ro.observe(el);
+    return () => ro.disconnect();
+  }, []);
 
-      {/* Bookmark button with dropdown */}
-      <Popover>
-          <PopoverTrigger asChild>
+  const handleNewFolder = useCallback(() => {
+    setNewFolderName("");
+    setShowNewFolderDialog(true);
+  }, [setNewFolderName, setShowNewFolderDialog]);
+
+  const handleNewFile = useCallback(() => {
+    const defaultName = getNextUntitledName(pane.files.map(f => f.name));
+    setNewFileName(defaultName);
+    setFileNameError(null);
+    setShowNewFileDialog(true);
+  }, [getNextUntitledName, pane.files, setNewFileName, setFileNameError, setShowNewFileDialog]);
+
+  const handleToggleFilter = useCallback(() => {
+    setShowFilterBar(!showFilterBar);
+    if (!showFilterBar) {
+      setTimeout(() => filterInputRef.current?.focus(), 0);
+    }
+  }, [showFilterBar, setShowFilterBar, filterInputRef]);
+
+  const isRemote = !pane.connection?.isLocal;
+
+  // Buttons that always remain visible (not collapsed)
+  const pinnedButtons = (
+    <>
+      {onGoToTerminalCwd && (
+        <Tooltip>
+          <TooltipTrigger asChild>
             <Button
               variant="ghost"
               size="icon"
-              className={cn("h-5 w-5 shrink-0", isCurrentPathBookmarked && "text-yellow-500")}
-              title={isCurrentPathBookmarked ? t("sftp.bookmark.remove") : t("sftp.bookmark.add")}
-              onClick={(e) => {
-                // If not bookmarked, toggle directly instead of opening popover
-                if (!isCurrentPathBookmarked && bookmarks.length === 0) {
-                  e.preventDefault();
-                  onToggleBookmark();
-                }
-              }}
+              className="h-6 w-6"
+              onClick={onGoToTerminalCwd}
             >
-              <Bookmark size={12} fill={isCurrentPathBookmarked ? "currentColor" : "none"} />
+              <TerminalSquare size={14} />
             </Button>
-          </PopoverTrigger>
-          <PopoverContent className="w-64 p-0" align="start">
-            <div className="p-2 border-b border-border/40">
-              <Button
-                variant={isCurrentPathBookmarked ? "secondary" : "ghost"}
-                size="sm"
-                className="w-full justify-start text-xs h-7"
-                onClick={onToggleBookmark}
-              >
-                <Bookmark size={12} fill={isCurrentPathBookmarked ? "currentColor" : "none"} className={cn("mr-2", isCurrentPathBookmarked && "text-yellow-500")} />
-                {isCurrentPathBookmarked ? t("sftp.bookmark.remove") : t("sftp.bookmark.add")}
-              </Button>
-            </div>
-            {bookmarks.length > 0 ? (
-              <div className="max-h-48 overflow-auto py-1">
-                {bookmarks.map((bm) => (
-                  <div
-                    key={bm.id}
-                    className="flex items-center gap-1 px-2 py-1 hover:bg-secondary/60 group"
-                  >
-                    <button
-                      type="button"
-                      className="flex-1 text-left text-xs truncate font-mono"
-                      onClick={() => onNavigateToBookmark(bm.path)}
-                      title={bm.path}
-                    >
-                      {bm.label}
-                      <span className="ml-1.5 text-muted-foreground text-[10px]">{bm.path}</span>
-                    </button>
-                    <Button
-                      variant="ghost"
-                      size="icon"
-                      className="h-5 w-5 opacity-0 group-hover:opacity-100 shrink-0 text-muted-foreground hover:text-destructive"
-                      onClick={(e) => {
-                        e.stopPropagation();
-                        onDeleteBookmark(bm.id);
-                      }}
-                    >
-                      <Trash2 size={10} />
-                    </Button>
-                  </div>
-                ))}
-              </div>
-            ) : (
-              <div className="p-3 text-xs text-muted-foreground text-center">
-                {t("sftp.bookmark.empty")}
-              </div>
-            )}
+          </TooltipTrigger>
+          <TooltipContent>{t("sftp.goToTerminalCwd")}</TooltipContent>
+        </Tooltip>
+      )}
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <Button
+            variant={showFilterBar || pane.filter ? "secondary" : "ghost"}
+            size="icon"
+            className={cn("h-6 w-6", pane.filter && "text-primary")}
+            onClick={handleToggleFilter}
+          >
+            <Search size={14} />
+          </Button>
+        </TooltipTrigger>
+        <TooltipContent>{t("sftp.filter")}</TooltipContent>
+      </Tooltip>
+    </>
+  );
+
+  // Collapsible action buttons (shown inline when space allows)
+  const collapsibleButtons = (
+    <>
+      {isRemote && (
+        <Popover>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <PopoverTrigger asChild>
+                <Button
+                  variant="ghost"
+                  size="icon"
+                  className="h-6 w-6"
+                >
+                  <Languages size={14} />
+                </Button>
+              </PopoverTrigger>
+            </TooltipTrigger>
+            <TooltipContent>{t("sftp.encoding.label")}</TooltipContent>
+          </Tooltip>
+          <PopoverContent className="w-36 p-1" align="end">
+            {(["auto", "utf-8", "gb18030"] as const).map((encoding) => (
+              <PopoverClose asChild key={encoding}>
+                <button
+                  className={cn(
+                    "w-full flex items-center gap-2 px-2 py-1.5 text-xs rounded-sm hover:bg-secondary transition-colors",
+                    pane.filenameEncoding === encoding && "bg-secondary"
+                  )}
+                  onClick={() => onSetFilenameEncoding(encoding)}
+                >
+                  <Check
+                    size={12}
+                    className={cn(
+                      "shrink-0",
+                      pane.filenameEncoding === encoding ? "opacity-100" : "opacity-0"
+                    )}
+                  />
+                  {t(`sftp.encoding.${encoding === "utf-8" ? "utf8" : encoding}`)}
+                </button>
+              </PopoverClose>
+            ))}
           </PopoverContent>
         </Popover>
+      )}
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <Button
+            variant="ghost"
+            size="icon"
+            className="h-6 w-6"
+            onClick={handleNewFolder}
+          >
+            <FolderPlus size={14} />
+          </Button>
+        </TooltipTrigger>
+        <TooltipContent>{t("sftp.newFolder")}</TooltipContent>
+      </Tooltip>
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <Button
+            variant="ghost"
+            size="icon"
+            className="h-6 w-6"
+            onClick={handleNewFile}
+          >
+            <FilePlus size={14} />
+          </Button>
+        </TooltipTrigger>
+        <TooltipContent>{t("sftp.newFile")}</TooltipContent>
+      </Tooltip>
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <Button
+            variant={showHiddenFiles ? "secondary" : "ghost"}
+            size="icon"
+            className={cn("h-6 w-6", showHiddenFiles && "text-primary")}
+            onClick={onToggleShowHiddenFiles}
+          >
+            {showHiddenFiles ? <EyeOff size={14} /> : <Eye size={14} />}
+          </Button>
+        </TooltipTrigger>
+        <TooltipContent>{t("settings.sftp.showHiddenFiles")}</TooltipContent>
+      </Tooltip>
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <Button
+            variant="ghost"
+            size="icon"
+            className="h-6 w-6"
+            onClick={onRefresh}
+          >
+            <RefreshCw
+              size={14}
+              className={
+                pane.loading || pane.reconnecting ? "animate-spin" : ""
+              }
+            />
+          </Button>
+        </TooltipTrigger>
+        <TooltipContent>{t("common.refresh")}</TooltipContent>
+      </Tooltip>
+    </>
+  );
 
-      <div className="ml-auto flex items-center gap-0.5">
-        {!pane.connection?.isLocal && (
-          <Popover>
-            <PopoverTrigger asChild>
+  // Overflow dropdown menu items (same collapsible actions as menu items)
+  const overflowMenuItems = (
+    <div className="flex flex-col min-w-[140px]">
+      {isRemote && (
+        <Popover>
+          <PopoverTrigger asChild>
+            <button className="flex items-center gap-2 px-2 py-1.5 text-xs rounded-sm hover:bg-secondary transition-colors w-full text-left">
+              <Languages size={14} className="shrink-0" />
+              {t("sftp.encoding.label")}
+            </button>
+          </PopoverTrigger>
+          <PopoverContent className="w-36 p-1" align="start" side="right">
+            {(["auto", "utf-8", "gb18030"] as const).map((encoding) => (
+              <PopoverClose asChild key={encoding}>
+                <button
+                  className={cn(
+                    "w-full flex items-center gap-2 px-2 py-1.5 text-xs rounded-sm hover:bg-secondary transition-colors",
+                    pane.filenameEncoding === encoding && "bg-secondary"
+                  )}
+                  onClick={() => onSetFilenameEncoding(encoding)}
+                >
+                  <Check
+                    size={12}
+                    className={cn(
+                      "shrink-0",
+                      pane.filenameEncoding === encoding ? "opacity-100" : "opacity-0"
+                    )}
+                  />
+                  {t(`sftp.encoding.${encoding === "utf-8" ? "utf8" : encoding}`)}
+                </button>
+              </PopoverClose>
+            ))}
+          </PopoverContent>
+        </Popover>
+      )}
+      <button
+        className="flex items-center gap-2 px-2 py-1.5 text-xs rounded-sm hover:bg-secondary transition-colors w-full text-left"
+        onClick={handleNewFolder}
+      >
+        <FolderPlus size={14} className="shrink-0" />
+        {t("sftp.newFolder")}
+      </button>
+      <button
+        className="flex items-center gap-2 px-2 py-1.5 text-xs rounded-sm hover:bg-secondary transition-colors w-full text-left"
+        onClick={handleNewFile}
+      >
+        <FilePlus size={14} className="shrink-0" />
+        {t("sftp.newFile")}
+      </button>
+      <button
+        className={cn(
+          "flex items-center gap-2 px-2 py-1.5 text-xs rounded-sm hover:bg-secondary transition-colors w-full text-left",
+          showHiddenFiles && "text-primary",
+        )}
+        onClick={onToggleShowHiddenFiles}
+      >
+        {showHiddenFiles ? <EyeOff size={14} className="shrink-0" /> : <Eye size={14} className="shrink-0" />}
+        {t("settings.sftp.showHiddenFiles")}
+      </button>
+      <button
+        className="flex items-center gap-2 px-2 py-1.5 text-xs rounded-sm hover:bg-secondary transition-colors w-full text-left"
+        onClick={onRefresh}
+      >
+        <RefreshCw
+          size={14}
+          className={cn("shrink-0", (pane.loading || pane.reconnecting) && "animate-spin")}
+        />
+        {t("common.refresh")}
+      </button>
+    </div>
+  );
+
+  return (
+    <TooltipProvider delayDuration={500} skipDelayDuration={100} disableHoverableContent>
+      {/* Toolbar - always visible when connected */}
+      <div ref={outerRef} className="h-7 px-2 flex items-center gap-1 border-b border-border/40 bg-secondary/20">
+        {/* Editable Breadcrumb with autocomplete */}
+        {isEditingPath ? (
+          <div className="relative flex-1">
+            <Input
+              ref={pathInputRef}
+              value={editingPathValue}
+              onChange={(e) => {
+                setEditingPathValue(e.target.value);
+                setShowPathSuggestions(true);
+                setPathSuggestionIndex(-1);
+              }}
+              onBlur={handlePathBlur}
+              onKeyDown={handlePathKeyDown}
+              onFocus={() => setShowPathSuggestions(true)}
+              className="h-5 w-full text-[10px] bg-background"
+              autoFocus
+            />
+            {showPathSuggestions && pathSuggestions.length > 0 && (
+              <div
+                ref={pathDropdownRef}
+                className="absolute top-full left-0 right-0 mt-1 bg-popover border border-border rounded-md shadow-lg z-50 max-h-48 overflow-auto"
+              >
+                {pathSuggestions.map((suggestion, idx) => (
+                  <button
+                    key={suggestion.path}
+                    type="button"
+                    className={cn(
+                      "w-full px-3 py-2 text-left text-xs flex items-center gap-2 hover:bg-secondary/60 transition-colors",
+                      idx === pathSuggestionIndex && "bg-secondary/80",
+                    )}
+                    onMouseDown={(e) => {
+                      e.preventDefault();
+                      handlePathSubmit(suggestion.path);
+                    }}
+                  >
+                    {suggestion.type === "folder" ? (
+                      <Folder size={12} className="text-primary shrink-0" />
+                    ) : (
+                      <Home
+                        size={12}
+                        className="text-muted-foreground shrink-0"
+                      />
+                    )}
+                    <span className="truncate font-mono">
+                      {suggestion.path}
+                    </span>
+                  </button>
+                ))}
+              </div>
+            )}
+          </div>
+        ) : (
+          <div
+            className="flex-1 min-w-0 cursor-text hover:bg-secondary/50 rounded px-1 transition-colors"
+            onDoubleClick={handlePathDoubleClick}
+            title={t("sftp.path.doubleClickToEdit")}
+          >
+            <SftpBreadcrumb
+              path={pane.connection.currentPath}
+              onNavigate={onNavigateTo}
+              onHome={() =>
+                pane.connection?.homeDir &&
+                onNavigateTo(pane.connection.homeDir)
+              }
+            />
+          </div>
+        )}
+
+        {/* Bookmark button with dropdown */}
+        <Popover>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <PopoverTrigger asChild>
+                  <Button
+                    variant="ghost"
+                    size="icon"
+                    className={cn("h-5 w-5 shrink-0", isCurrentPathBookmarked && "text-yellow-500")}
+                    onClick={(e) => {
+                  // If not bookmarked, toggle directly instead of opening popover
+                  if (!isCurrentPathBookmarked && bookmarks.length === 0) {
+                    e.preventDefault();
+                    onToggleBookmark();
+                  }
+                }}
+              >
+                <Bookmark size={12} fill={isCurrentPathBookmarked ? "currentColor" : "none"} />
+              </Button>
+                </PopoverTrigger>
+              </TooltipTrigger>
+              <TooltipContent>{isCurrentPathBookmarked ? t("sftp.bookmark.remove") : t("sftp.bookmark.add")}</TooltipContent>
+            </Tooltip>
+            <PopoverContent className="w-64 p-0" align="start">
+              <div className="p-2 border-b border-border/40">
+                <Button
+                  variant={isCurrentPathBookmarked ? "secondary" : "ghost"}
+                  size="sm"
+                  className="w-full justify-start text-xs h-7"
+                  onClick={onToggleBookmark}
+                >
+                  <Bookmark size={12} fill={isCurrentPathBookmarked ? "currentColor" : "none"} className={cn("mr-2", isCurrentPathBookmarked && "text-yellow-500")} />
+                  {isCurrentPathBookmarked ? t("sftp.bookmark.remove") : t("sftp.bookmark.add")}
+                </Button>
+              </div>
+              {bookmarks.length > 0 ? (
+                <div className="max-h-48 overflow-auto py-1">
+                  {bookmarks.map((bm) => (
+                    <div
+                      key={bm.id}
+                      className="flex items-center gap-1 px-2 py-1 hover:bg-secondary/60 group"
+                    >
+                      <button
+                        type="button"
+                        className="flex-1 text-left text-xs truncate font-mono"
+                        onClick={() => onNavigateToBookmark(bm.path)}
+                        title={bm.path}
+                      >
+                        {bm.label}
+                        <span className="ml-1.5 text-muted-foreground text-[10px]">{bm.path}</span>
+                      </button>
+                      <Button
+                        variant="ghost"
+                        size="icon"
+                        className="h-5 w-5 opacity-0 group-hover:opacity-100 shrink-0 text-muted-foreground hover:text-destructive"
+                        onClick={(e) => {
+                          e.stopPropagation();
+                          onDeleteBookmark(bm.id);
+                        }}
+                      >
+                        <Trash2 size={10} />
+                      </Button>
+                    </div>
+                  ))}
+                </div>
+              ) : (
+                <div className="p-3 text-xs text-muted-foreground text-center">
+                  {t("sftp.bookmark.empty")}
+                </div>
+              )}
+            </PopoverContent>
+          </Popover>
+
+        {/* Action buttons area - observed for overflow */}
+        <div className="ml-auto flex items-center gap-0.5 shrink-0">
+          {collapsed ? (
+            <>
+              {pinnedButtons}
+              <Dropdown>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <DropdownTrigger asChild>
+                      <Button
+                        variant="ghost"
+                        size="icon"
+                        className="h-6 w-6"
+                      >
+                    <MoreHorizontal size={14} />
+                  </Button>
+                    </DropdownTrigger>
+                  </TooltipTrigger>
+                  <TooltipContent>{t("common.more")}</TooltipContent>
+                </Tooltip>
+                <DropdownContent align="end">
+                  {overflowMenuItems}
+                </DropdownContent>
+              </Dropdown>
+            </>
+          ) : (
+            <>
+              {pinnedButtons}
+              {collapsibleButtons}
+            </>
+          )}
+        </div>
+      </div>
+
+      {/* Inline filter bar - appears below toolbar when search is active */}
+      {showFilterBar && (
+        <div className="h-8 px-3 flex items-center gap-2 border-b border-border/40 bg-secondary/10">
+          <div className="relative flex-1">
+            <Search
+              size={12}
+              className="absolute left-2 top-1/2 -translate-y-1/2 text-muted-foreground"
+            />
+            <Input
+              ref={filterInputRef}
+              value={pane.filter}
+              onChange={(e) =>
+                startTransition(() => onSetFilter(e.target.value))
+              }
+              placeholder={t("sftp.filter.placeholder")}
+              className="h-6 w-full pl-7 pr-7 text-xs bg-background"
+              onKeyDown={(e) => {
+                if (e.key === "Escape") {
+                  if (pane.filter) {
+                    startTransition(() => onSetFilter(""));
+                  } else {
+                    setShowFilterBar(false);
+                  }
+                }
+              }}
+            />
+            {pane.filter && (
+              <button
+                onClick={() => startTransition(() => onSetFilter(""))}
+                className="absolute right-2 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground"
+              >
+                <X size={12} />
+              </button>
+            )}
+          </div>
+          <Tooltip>
+            <TooltipTrigger asChild>
               <Button
                 variant="ghost"
                 size="icon"
-                className="h-6 w-6"
-                title={t("sftp.encoding.label")}
-              >
-                <Languages size={14} />
-              </Button>
-            </PopoverTrigger>
-            <PopoverContent className="w-36 p-1" align="end">
-              {(["auto", "utf-8", "gb18030"] as const).map((encoding) => (
-                <PopoverClose asChild key={encoding}>
-                  <button
-                    className={cn(
-                      "w-full flex items-center gap-2 px-2 py-1.5 text-xs rounded-sm hover:bg-secondary transition-colors",
-                      pane.filenameEncoding === encoding && "bg-secondary"
-                    )}
-                    onClick={() => onSetFilenameEncoding(encoding)}
-                  >
-                    <Check
-                      size={12}
-                      className={cn(
-                        "shrink-0",
-                        pane.filenameEncoding === encoding ? "opacity-100" : "opacity-0"
-                      )}
-                    />
-                    {t(`sftp.encoding.${encoding === "utf-8" ? "utf8" : encoding}`)}
-                  </button>
-                </PopoverClose>
-              ))}
-            </PopoverContent>
-          </Popover>
-        )}
-        <Button
-          variant="ghost"
-          size="icon"
-          className="h-6 w-6"
-          onClick={() => {
-            setNewFolderName("");
-            setShowNewFolderDialog(true);
-          }}
-          title={t("sftp.newFolder")}
-        >
-          <FolderPlus size={14} />
-        </Button>
-        <Button
-          variant="ghost"
-          size="icon"
-          className="h-6 w-6"
-          onClick={() => {
-            const defaultName = getNextUntitledName(pane.files.map(f => f.name));
-            setNewFileName(defaultName);
-            setFileNameError(null);
-            setShowNewFileDialog(true);
-          }}
-          title={t("sftp.newFile")}
-        >
-          <FilePlus size={14} />
-        </Button>
-        <Button
-          variant={showHiddenFiles ? "secondary" : "ghost"}
-          size="icon"
-          className={cn("h-6 w-6", showHiddenFiles && "text-primary")}
-          onClick={onToggleShowHiddenFiles}
-          title={t("settings.sftp.showHiddenFiles")}
-        >
-          {showHiddenFiles ? <EyeOff size={14} /> : <Eye size={14} />}
-        </Button>
-        <Button
-          variant={showFilterBar || pane.filter ? "secondary" : "ghost"}
-          size="icon"
-          className={cn("h-6 w-6", pane.filter && "text-primary")}
-          onClick={() => {
-            setShowFilterBar(!showFilterBar);
-            if (!showFilterBar) {
-              setTimeout(() => filterInputRef.current?.focus(), 0);
-            }
-          }}
-          title={t("sftp.filter")}
-        >
-          <Search size={14} />
-        </Button>
-        <Button
-          variant="ghost"
-          size="icon"
-          className="h-6 w-6"
-          onClick={onRefresh}
-          title={t("common.refresh")}
-        >
-          <RefreshCw
-            size={14}
-            className={
-              pane.loading || pane.reconnecting ? "animate-spin" : ""
-            }
-          />
-        </Button>
-      </div>
-    </div>
-
-    {/* Inline filter bar - appears below toolbar when search is active */}
-    {showFilterBar && (
-      <div className="h-8 px-3 flex items-center gap-2 border-b border-border/40 bg-secondary/10">
-        <div className="relative flex-1">
-          <Search
-            size={12}
-            className="absolute left-2 top-1/2 -translate-y-1/2 text-muted-foreground"
-          />
-          <Input
-            ref={filterInputRef}
-            value={pane.filter}
-            onChange={(e) =>
-              startTransition(() => onSetFilter(e.target.value))
-            }
-            placeholder={t("sftp.filter.placeholder")}
-            className="h-6 w-full pl-7 pr-7 text-xs bg-background"
-            onKeyDown={(e) => {
-              if (e.key === "Escape") {
-                if (pane.filter) {
+                className="h-6 w-6 shrink-0"
+                onClick={() => {
                   startTransition(() => onSetFilter(""));
-                } else {
                   setShowFilterBar(false);
-                }
-              }
-            }}
-          />
-          {pane.filter && (
-            <button
-              onClick={() => startTransition(() => onSetFilter(""))}
-              className="absolute right-2 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground"
-            >
-              <X size={12} />
-            </button>
-          )}
+                }}
+              >
+                <X size={14} />
+              </Button>
+            </TooltipTrigger>
+            <TooltipContent>{t("common.close")}</TooltipContent>
+          </Tooltip>
         </div>
-        <Button
-          variant="ghost"
-          size="icon"
-          className="h-6 w-6 shrink-0"
-          onClick={() => {
-            startTransition(() => onSetFilter(""));
-            setShowFilterBar(false);
-          }}
-          title={t("common.close")}
-        >
-          <X size={14} />
-        </Button>
-      </div>
-    )}
-  </>
-);
+      )}
+    </TooltipProvider>
+  );
+};

components/sftp/SftpPaneView.tsx

@@ -58,6 +58,7 @@ interface SftpPaneViewProps {
   showHeader?: boolean;
   showEmptyHeader?: boolean;
   onToggleShowHiddenFiles?: () => void;
+  onGoToTerminalCwd?: () => void;
 }
 
 const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
@@ -66,6 +67,7 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
   showHeader = true,
   showEmptyHeader = true,
   onToggleShowHiddenFiles,
+  onGoToTerminalCwd,
 }) => {
   const isActive = true;
 
@@ -299,7 +301,6 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
       <SftpPaneToolbar
         t={t}
         pane={pane}
-        onNavigateUp={callbacks.onNavigateUp}
         onNavigateTo={callbacks.onNavigateTo}
         onSetFilter={callbacks.onSetFilter}
         onSetFilenameEncoding={callbacks.onSetFilenameEncoding}
@@ -335,6 +336,7 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
         onDeleteBookmark={deleteBookmark}
         showHiddenFiles={pane.showHiddenFiles}
         onToggleShowHiddenFiles={onToggleShowHiddenFiles}
+        onGoToTerminalCwd={onGoToTerminalCwd}
       />
 
       <SftpPaneFileList

components/sftp/SftpTransferItem.tsx

@@ -12,6 +12,7 @@ import {
     XCircle,
 } from 'lucide-react';
 import React, { memo } from 'react';
+import { getParentPath } from '../../application/state/sftp/utils';
 import { cn } from '../../lib/utils';
 import { TransferTask } from '../../types';
 import { Button } from '../ui/button';
@@ -22,9 +23,18 @@ interface SftpTransferItemProps {
     onCancel: () => void;
     onRetry: () => void;
     onDismiss: () => void;
+    canRevealTarget?: boolean;
+    onRevealTarget?: () => void;
 }
 
-const SftpTransferItemInner: React.FC<SftpTransferItemProps> = ({ task, onCancel, onRetry, onDismiss }) => {
+const SftpTransferItemInner: React.FC<SftpTransferItemProps> = ({
+    task,
+    onCancel,
+    onRetry,
+    onDismiss,
+    canRevealTarget = false,
+    onRevealTarget,
+}) => {
     const progress = task.totalBytes > 0 ? Math.min((task.transferredBytes / task.totalBytes) * 100, 100) : 0;
 
     // Calculate remaining time from backend-reported sliding-window speed
@@ -49,33 +59,43 @@ const SftpTransferItemInner: React.FC<SftpTransferItemProps> = ({ task, onCancel
             : '';
 
     const speedFormatted = effectiveSpeed > 0 ? formatSpeed(effectiveSpeed) : '';
+    const targetDirectoryPath = task.isDirectory ? task.targetPath : getParentPath(task.targetPath);
 
-    return (
-        <div className="flex items-center gap-3 px-4 py-2.5 bg-background/60 border-t border-border/40 backdrop-blur-sm">
-            <div className="h-6 w-6 rounded flex items-center justify-center shrink-0">
-                {task.status === 'transferring' && <Loader2 size={14} className="animate-spin text-primary" />}
+    const details = (
+        <>
+            <div className="h-5 w-5 rounded flex items-center justify-center shrink-0">
+                {task.status === 'transferring' && <Loader2 size={12} className="animate-spin text-primary" />}
                 {task.status === 'pending' && (task.isDirectory
-                    ? <FolderUp size={14} className="text-muted-foreground animate-pulse" />
-                    : <ArrowDown size={14} className="text-muted-foreground animate-bounce" />
+                    ? <FolderUp size={12} className="text-muted-foreground animate-pulse" />
+                    : <ArrowDown size={12} className="text-muted-foreground animate-bounce" />
                 )}
-                {task.status === 'completed' && <CheckCircle2 size={14} className="text-green-500" />}
-                {task.status === 'failed' && <XCircle size={14} className="text-destructive" />}
-                {task.status === 'cancelled' && <XCircle size={14} className="text-muted-foreground" />}
+                {task.status === 'completed' && <CheckCircle2 size={12} className="text-green-500" />}
+                {task.status === 'failed' && <XCircle size={12} className="text-destructive" />}
+                {task.status === 'cancelled' && <XCircle size={12} className="text-muted-foreground" />}
             </div>
 
             <div className="flex-1 min-w-0">
                 <div className="flex items-center gap-2">
-                    <span className="text-sm truncate font-medium">{task.fileName}</span>
+                    <span className="text-[13px] leading-5 truncate font-medium">{task.fileName}</span>
                     {task.status === 'transferring' && speedFormatted && (
-                        <span className="text-xs text-primary/80 font-mono transition-opacity duration-300">{speedFormatted}</span>
+                        <span className="text-[10px] text-primary/80 font-mono transition-opacity duration-300">{speedFormatted}</span>
                     )}
                     {task.status === 'transferring' && remainingFormatted && (
-                        <span className="text-xs text-muted-foreground transition-opacity duration-300">{remainingFormatted}</span>
+                        <span className="text-[10px] text-muted-foreground transition-opacity duration-300">{remainingFormatted}</span>
                     )}
                 </div>
+                <div
+                    className={cn(
+                        "text-[9px] mt-0.5 truncate",
+                        canRevealTarget ? "text-primary/80" : "text-muted-foreground",
+                    )}
+                    title={targetDirectoryPath}
+                >
+                    {targetDirectoryPath}
+                </div>
                 {(task.status === 'transferring' || task.status === 'pending') && (
-                    <div className="flex items-center gap-2 mt-1.5">
-                        <div className="flex-1 h-2 bg-secondary/80 rounded-full overflow-hidden">
+                    <div className="flex items-center gap-2 mt-1">
+                        <div className="flex-1 h-1.5 bg-secondary/80 rounded-full overflow-hidden">
                             <div
                                 className={cn(
                                     "h-full rounded-full relative overflow-hidden",
@@ -100,39 +120,56 @@ const SftpTransferItemInner: React.FC<SftpTransferItemProps> = ({ task, onCancel
                                 )}
                             </div>
                         </div>
-                        <span className="text-[11px] text-muted-foreground shrink-0 min-w-[40px] text-right font-mono">
+                        <span className="text-[10px] text-muted-foreground shrink-0 min-w-[34px] text-right font-mono">
                             {task.status === 'pending' ? 'waiting...' : `${Math.round(progress)}%`}
                         </span>
                     </div>
                 )}
                 {task.status === 'transferring' && bytesDisplay && (
-                    <div className="text-[10px] text-muted-foreground mt-0.5 font-mono">
+                    <div className="text-[9px] text-muted-foreground mt-0.5 font-mono">
                         {bytesDisplay}
                     </div>
                 )}
                 {task.status === 'completed' && bytesDisplay && (
-                    <div className="text-[10px] text-green-600 mt-0.5">
+                    <div className="text-[9px] text-green-600 mt-0.5">
                         Completed - {bytesDisplay}
                     </div>
                 )}
                 {task.status === 'failed' && task.error && (
-                    <span className="text-xs text-destructive">{task.error}</span>
+                    <span className="text-[10px] text-destructive">{task.error}</span>
                 )}
             </div>
+        </>
+    );
+
+    return (
+        <div className="flex items-center gap-2.5 px-3 py-2 bg-background/60 border-t border-border/40 backdrop-blur-sm">
+            {canRevealTarget && onRevealTarget ? (
+                <button
+                    type="button"
+                    className="flex flex-1 min-w-0 items-center gap-2.5 rounded-sm text-left transition-colors hover:bg-primary/5 focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-primary/50"
+                    onClick={onRevealTarget}
+                    title="Open transfer destination"
+                >
+                    {details}
+                </button>
+            ) : (
+                details
+            )}
 
             <div className="flex items-center gap-1 shrink-0">
                 {task.status === 'failed' && task.retryable !== false && (
-                    <Button variant="ghost" size="icon" className="h-7 w-7" onClick={onRetry} title="Retry">
+                    <Button variant="ghost" size="icon" className="h-6 w-6" onClick={onRetry} title="Retry">
                         <RefreshCw size={12} />
                     </Button>
                 )}
                 {(task.status === 'pending' || task.status === 'transferring') && (
-                    <Button variant="ghost" size="icon" className="h-7 w-7 text-destructive hover:text-destructive" onClick={onCancel} title="Cancel">
+                    <Button variant="ghost" size="icon" className="h-6 w-6 text-destructive hover:text-destructive" onClick={onCancel} title="Cancel">
                         <X size={12} />
                     </Button>
                 )}
                 {(task.status === 'completed' || task.status === 'failed' || task.status === 'cancelled') && (
-                    <Button variant="ghost" size="icon" className="h-7 w-7" onClick={onDismiss} title="Dismiss">
+                    <Button variant="ghost" size="icon" className="h-6 w-6" onClick={onDismiss} title="Dismiss">
                         <X size={12} />
                     </Button>
                 )}
@@ -158,6 +195,8 @@ const arePropsEqual = (
 
     // Always re-render on fileName change
     if (prev.fileName !== next.fileName) return false;
+    if (prev.targetPath !== next.targetPath) return false;
+    if ((prevProps.canRevealTarget ?? false) !== (nextProps.canRevealTarget ?? false)) return false;
 
     // For transferring status, allow frequent re-renders for smooth progress bar
     if (next.status === 'transferring') {

components/sftp/SftpTransferQueue.tsx

@@ -0,0 +1,79 @@
+import React from "react";
+import { Button } from "../ui/button";
+import { useI18n } from "../../application/i18n/I18nProvider";
+import type { useSftpState } from "../../application/state/useSftpState";
+import type { TransferTask } from "../../types";
+import { SftpTransferItem } from "./SftpTransferItem";
+
+type SftpState = ReturnType<typeof useSftpState>;
+
+interface SftpTransferQueueProps {
+  sftp: SftpState;
+  visibleTransfers: SftpState["transfers"];
+  canRevealTransferTarget?: (task: TransferTask) => boolean;
+  onRevealTransferTarget?: (task: TransferTask) => void | Promise<void>;
+}
+
+export const SftpTransferQueue: React.FC<SftpTransferQueueProps> = ({
+  sftp,
+  visibleTransfers,
+  canRevealTransferTarget,
+  onRevealTransferTarget,
+}) => {
+  const { t } = useI18n();
+
+  if (sftp.transfers.length === 0) {
+    return null;
+  }
+
+  return (
+    <div className="border-t border-border/70 bg-secondary/80 backdrop-blur-sm shrink-0">
+      <div className="flex items-center justify-between px-3 py-1.5 text-[11px] text-muted-foreground border-b border-border/40">
+        <span className="font-medium">
+          {t("sftp.transfers")}
+          {sftp.activeTransfersCount > 0 && (
+            <span className="ml-2 text-primary">
+              ({t("sftp.transfers.active", { count: sftp.activeTransfersCount })})
+            </span>
+          )}
+        </span>
+        {sftp.transfers.some(
+          (tr) => tr.status === "completed" || tr.status === "cancelled",
+        ) && (
+          <Button
+            variant="ghost"
+            size="sm"
+            className="h-5 px-1.5 text-[11px]"
+            onClick={sftp.clearCompletedTransfers}
+          >
+            {t("sftp.transfers.clearCompleted")}
+          </Button>
+        )}
+      </div>
+      <div className="max-h-40 overflow-auto">
+        {visibleTransfers.map((task) => (
+          <SftpTransferItem
+            key={task.id}
+            task={task}
+            onCancel={() => {
+              if (task.sourceConnectionId === "external") {
+                sftp.cancelExternalUpload();
+              }
+              sftp.cancelTransfer(task.id);
+            }}
+            onRetry={() => sftp.retryTransfer(task.id)}
+            onDismiss={() => sftp.dismissTransfer(task.id)}
+            canRevealTarget={canRevealTransferTarget?.(task) ?? false}
+            onRevealTarget={
+              onRevealTransferTarget
+                ? () => {
+                    void onRevealTransferTarget(task);
+                  }
+                : undefined
+            }
+          />
+        ))}
+      </div>
+    </div>
+  );
+};

components/sftp/hooks/useSftpPaneVirtualList.ts

@@ -30,14 +30,12 @@ export const useSftpPaneVirtualList = ({
     if (!container || !isActive) return;
     const update = () => setViewportHeight(container.clientHeight);
     update();
-    const raf1 = window.requestAnimationFrame(update);
-    const raf2 = window.requestAnimationFrame(update);
+    const raf = window.requestAnimationFrame(update);
     const resizeObserver = new ResizeObserver(update);
     resizeObserver.observe(container);
     return () => {
       resizeObserver.disconnect();
-      window.cancelAnimationFrame(raf1);
-      window.cancelAnimationFrame(raf2);
+      window.cancelAnimationFrame(raf);
     };
   }, [isActive, sortedDisplayFiles.length]);
 

components/sftp/hooks/useSftpViewFileOps.ts

@@ -119,6 +119,10 @@ export const useSftpViewFileOps = ({
     file: SftpFileEntry;
     side: "left" | "right";
     fullPath: string;
+    /** Host ID at the time the file was opened, to prevent saving to wrong host.
+     * Uses hostId (not connectionId) because auto-reconnect after a transient
+     * disconnect generates a fresh connectionId for the same endpoint. */
+    hostId?: string;
   } | null>(null);
   const [textEditorContent, setTextEditorContent] = useState("");
   const [loadingTextContent, setLoadingTextContent] = useState(false);
@@ -148,7 +152,7 @@ export const useSftpViewFileOps = ({
 
       try {
         setLoadingTextContent(true);
-        setTextEditorTarget({ file, side, fullPath });
+        setTextEditorTarget({ file, side, fullPath, hostId: pane.connection.hostId });
 
         const content = await sftpRef.current.readTextFile(side, fullPath);
 
@@ -242,6 +246,19 @@ export const useSftpViewFileOps = ({
     async (content: string) => {
       if (!textEditorTarget) return;
 
+      // Verify the SFTP connection hasn't switched to a different host.
+      // We check hostId (not connectionId) because auto-reconnect after a
+      // transient disconnect generates a fresh connectionId for the same
+      // endpoint.  The auto-connect effect in SftpSidePanel blocks
+      // host-switching while the editor is open, so a hostId mismatch here
+      // reliably indicates a genuinely different endpoint.
+      const currentPane = textEditorTarget.side === "left"
+        ? sftpRef.current.leftPane
+        : sftpRef.current.rightPane;
+      if (textEditorTarget.hostId && currentPane.connection?.hostId !== textEditorTarget.hostId) {
+        throw new Error("SFTP connection changed while editing — file not saved to prevent writing to wrong host");
+      }
+
       await sftpRef.current.writeTextFile(
         textEditorTarget.side,
         textEditorTarget.fullPath,

components/terminal/TerminalAuthDialog.tsx

@@ -10,6 +10,7 @@ import { SSHKey } from '../../types';
 import { Button } from '../ui/button';
 import { Input } from '../ui/input';
 import { Label } from '../ui/label';
+import { Dropdown, DropdownContent, DropdownTrigger } from '../ui/dropdown';
 import { Popover, PopoverContent, PopoverTrigger } from '../ui/popover';
 
 export type TerminalAuthMethod = 'password' | 'key' | 'certificate';
@@ -265,25 +266,34 @@ export const TerminalAuthDialog: React.FC<TerminalAuthDialogProps> = ({
                 <Button variant="secondary" onClick={onCancel}>
                     {t("common.close")}
                 </Button>
-                <div className="flex items-center gap-2">
-                    <Popover>
-                        <PopoverTrigger asChild>
-                            <Button disabled={!isValid} onClick={onSubmit}>
-                                {t("terminal.auth.continueSave")}
-                                <ChevronDown size={14} className="ml-2" />
-                            </Button>
-                        </PopoverTrigger>
-                        <PopoverContent className="w-40 p-1 z-50" align="end">
-                            <button
-                                className="w-full px-3 py-2 text-sm text-left hover:bg-secondary rounded-md"
-                                onClick={onSubmitWithoutSave ?? onSubmit}
+                <Dropdown>
+                    <div className="flex items-center rounded-md bg-primary text-primary-foreground">
+                        <Button
+                            disabled={!isValid}
+                            onClick={onSubmit}
+                            className="rounded-r-none bg-transparent hover:bg-white/10 shadow-none"
+                        >
+                            {t("terminal.auth.continueSave")}
+                        </Button>
+                        <DropdownTrigger asChild>
+                            <Button
                                 disabled={!isValid}
+                                className="px-2 rounded-l-none bg-transparent hover:bg-white/10 border-l border-primary-foreground/20 shadow-none"
                             >
-                                {t("common.continue")}
-                            </button>
-                        </PopoverContent>
-                    </Popover>
-                </div>
+                                <ChevronDown size={14} />
+                            </Button>
+                        </DropdownTrigger>
+                    </div>
+                    <DropdownContent className="w-44 p-1 z-50" align="end">
+                        <button
+                            className="w-full px-3 py-2 text-sm text-left hover:bg-secondary rounded-md"
+                            onClick={onSubmitWithoutSave ?? onSubmit}
+                            disabled={!isValid}
+                        >
+                            {t("common.continue")}
+                        </button>
+                    </DropdownContent>
+                </Dropdown>
             </div>
         </>
     );

components/terminal/TerminalConnectionDialog.tsx

@@ -2,7 +2,7 @@
  * Terminal Connection Dialog
  * Full connection overlay with host info, progress indicator, and auth/progress content
  */
-import { User } from 'lucide-react';
+import { Loader2, TerminalSquare, User } from 'lucide-react';
 import React from 'react';
 import { useI18n } from '../../application/i18n/I18nProvider';
 import { cn } from '../../lib/utils';
@@ -154,7 +154,11 @@ export const TerminalConnectionDialog: React.FC<TerminalConnectionDialogProps> =
                             "h-8 w-8 rounded-full flex items-center justify-center flex-shrink-0",
                             hasError ? "bg-destructive/20 text-destructive" : "bg-muted text-muted-foreground"
                         )}>
-                            {'>_'}
+                            {isConnecting ? (
+                                <Loader2 size={14} className="animate-spin" />
+                            ) : (
+                                <TerminalSquare size={14} />
+                            )}
                         </div>
                     </div>
                 </div>

components/terminal/TerminalToolbar.tsx

@@ -5,28 +5,19 @@
 import { Check, FolderInput, Languages, X, Zap, Palette, Search, TextCursorInput } from 'lucide-react';
 import React, { useState } from 'react';
 import { useI18n } from '../../application/i18n/I18nProvider';
-import { Snippet, Host } from '../../types';
+import { Host } from '../../types';
 import { Button } from '../ui/button';
 import { Popover, PopoverClose, PopoverContent, PopoverTrigger } from '../ui/popover';
+import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '../ui/tooltip';
 import { cn } from '../../lib/utils';
-import { ScrollArea } from '../ui/scroll-area';
-import ThemeCustomizeModal from './ThemeCustomizeModal';
 import HostKeywordHighlightPopover from './HostKeywordHighlightPopover';
 
 export interface TerminalToolbarProps {
     status: 'connecting' | 'connected' | 'disconnected';
-    snippets: Snippet[];
     host?: Host;
-    defaultThemeId: string;
-    defaultFontFamilyId: string;
-    defaultFontSize: number;
-    onUpdateTerminalThemeId?: (themeId: string) => void;
-    onUpdateTerminalFontFamilyId?: (fontFamilyId: string) => void;
-    onUpdateTerminalFontSize?: (fontSize: number) => void;
-    isScriptsOpen: boolean;
-    setIsScriptsOpen: (open: boolean) => void;
     onOpenSFTP: () => void;
-    onSnippetClick: (command: string) => void;
+    onOpenScripts: () => void;
+    onOpenTheme: () => void;
     onUpdateHost?: (host: Host) => void;
     showClose?: boolean;
     onClose?: () => void;
@@ -43,18 +34,10 @@ export interface TerminalToolbarProps {
 
 export const TerminalToolbar: React.FC<TerminalToolbarProps> = ({
     status,
-    snippets,
     host,
-    defaultThemeId,
-    defaultFontFamilyId,
-    defaultFontSize,
-    onUpdateTerminalThemeId,
-    onUpdateTerminalFontFamilyId,
-    onUpdateTerminalFontSize,
-    isScriptsOpen,
-    setIsScriptsOpen,
     onOpenSFTP,
-    onSnippetClick,
+    onOpenScripts,
+    onOpenTheme,
     onUpdateHost,
     showClose,
     onClose,
@@ -66,7 +49,6 @@ export const TerminalToolbar: React.FC<TerminalToolbarProps> = ({
     onSetTerminalEncoding,
 }) => {
     const { t } = useI18n();
-    const [themeModalOpen, setThemeModalOpen] = useState(false);
     const [highlightPopoverOpen, setHighlightPopoverOpen] = useState(false);
     const buttonBase = "h-6 w-6 p-0 shadow-none border-none text-[color:var(--terminal-toolbar-fg)] bg-transparent hover:bg-transparent";
 
@@ -75,69 +57,45 @@ export const TerminalToolbar: React.FC<TerminalToolbarProps> = ({
     const isSSHSession = !isLocalTerminal && !isSerialTerminal && host?.protocol !== 'telnet' && host?.protocol !== 'mosh' && !host?.moshEnabled && host?.hostname !== 'localhost';
     const hidesSftp = isLocalTerminal || isSerialTerminal;
 
-    const currentThemeId = host?.theme || defaultThemeId;
-    const currentFontFamilyId = host?.fontFamily || defaultFontFamilyId;
-    const currentFontSize = host?.fontSize || defaultFontSize;
-
-    const handleThemeChange = (themeId: string) => {
-        if (isLocalTerminal) {
-            onUpdateTerminalThemeId?.(themeId);
-            return;
-        }
-        if (host && onUpdateHost) {
-            onUpdateHost({ ...host, theme: themeId });
-        }
-    };
-
-    const handleFontFamilyChange = (fontFamilyId: string) => {
-        if (isLocalTerminal) {
-            onUpdateTerminalFontFamilyId?.(fontFamilyId);
-            return;
-        }
-        if (host && onUpdateHost) {
-            onUpdateHost({ ...host, fontFamily: fontFamilyId });
-        }
-    };
-
-    const handleFontSizeChange = (fontSize: number) => {
-        if (isLocalTerminal) {
-            onUpdateTerminalFontSize?.(fontSize);
-            return;
-        }
-        if (host && onUpdateHost) {
-            onUpdateHost({ ...host, fontSize });
-        }
-    };
-
     return (
-        <>
+        <TooltipProvider delayDuration={500} skipDelayDuration={100} disableHoverableContent>
             {!hidesSftp && (
-                <Button
-                    variant="secondary"
-                    size="icon"
-                    className={buttonBase}
-                    disabled={status !== 'connected'}
-                    title={status === 'connected' ? t("terminal.toolbar.openSftp") : t("terminal.toolbar.availableAfterConnect")}
-                    aria-label={t("terminal.toolbar.openSftp")}
-                    onClick={onOpenSFTP}
-                >
-                    <FolderInput size={12} />
-                </Button>
-            )}
-
-            {isSSHSession && onSetTerminalEncoding && (
-                <Popover>
-                    <PopoverTrigger asChild>
+                <Tooltip>
+                    <TooltipTrigger asChild>
                         <Button
                             variant="secondary"
                             size="icon"
                             className={buttonBase}
-                            title={t("terminal.toolbar.encoding")}
-                            aria-label={t("terminal.toolbar.encoding")}
+                            disabled={status !== 'connected'}
+                            aria-label={t("terminal.toolbar.openSftp")}
+                            onClick={onOpenSFTP}
                         >
-                            <Languages size={12} />
+                            <FolderInput size={12} />
                         </Button>
-                    </PopoverTrigger>
+                    </TooltipTrigger>
+                    <TooltipContent>
+                        {status === 'connected' ? t("terminal.toolbar.openSftp") : t("terminal.toolbar.availableAfterConnect")}
+                    </TooltipContent>
+                </Tooltip>
+            )}
+
+            {isSSHSession && onSetTerminalEncoding && (
+                <Popover>
+                    <Tooltip>
+                        <TooltipTrigger asChild>
+                            <PopoverTrigger asChild>
+                                <Button
+                                    variant="secondary"
+                                    size="icon"
+                                    className={buttonBase}
+                                    aria-label={t("terminal.toolbar.encoding")}
+                                >
+                                    <Languages size={12} />
+                                </Button>
+                            </PopoverTrigger>
+                        </TooltipTrigger>
+                        <TooltipContent>{t("terminal.toolbar.encoding")}</TooltipContent>
+                    </Tooltip>
                     <PopoverContent className="w-36 p-1" align="start">
                         {(["utf-8", "gb18030"] as const).map((enc) => (
                             <PopoverClose asChild key={enc}>
@@ -163,57 +121,35 @@ export const TerminalToolbar: React.FC<TerminalToolbarProps> = ({
                 </Popover>
             )}
 
-            <Popover open={isScriptsOpen} onOpenChange={setIsScriptsOpen}>
-                <PopoverTrigger asChild>
+            <Tooltip>
+                <TooltipTrigger asChild>
                     <Button
                         variant="secondary"
                         size="icon"
                         className={buttonBase}
-                        title={t("terminal.toolbar.scripts")}
                         aria-label={t("terminal.toolbar.scripts")}
+                        onClick={onOpenScripts}
                     >
                         <Zap size={12} />
                     </Button>
-                </PopoverTrigger>
-                <PopoverContent className="w-64 p-0" align="start">
-                    <div className="px-3 py-2 text-[10px] uppercase text-muted-foreground font-semibold bg-muted/30 border-b">
-                        {t("terminal.toolbar.library")}
-                    </div>
-                    <ScrollArea className="h-64">
-                        <div className="py-1">
-                            {snippets.length === 0 ? (
-                                <div className="px-3 py-2 text-xs text-muted-foreground italic">
-                                    {t("terminal.toolbar.noSnippets")}
-                                </div>
-                            ) : (
-                                snippets.map((s) => (
-                                    <button
-                                        key={s.id}
-                                        onClick={() => onSnippetClick(s.command)}
-                                        className="w-full text-left px-3 py-2 text-xs hover:bg-accent transition-colors flex flex-col gap-0.5"
-                                    >
-                                        <span className="font-medium">{s.label}</span>
-                                        <span className="text-muted-foreground truncate font-mono text-[10px]">
-                                            {s.command}
-                                        </span>
-                                    </button>
-                                ))
-                            )}
-                        </div>
-                    </ScrollArea>
-                </PopoverContent>
-            </Popover>
+                </TooltipTrigger>
+                <TooltipContent>{t("terminal.toolbar.scripts")}</TooltipContent>
+            </Tooltip>
 
-            <Button
-                variant="secondary"
-                size="icon"
-                className={buttonBase}
-                title={t("terminal.toolbar.terminalSettings")}
-                aria-label={t("terminal.toolbar.terminalSettings")}
-                onClick={() => setThemeModalOpen(true)}
-            >
-                <Palette size={12} />
-            </Button>
+            <Tooltip>
+                <TooltipTrigger asChild>
+                    <Button
+                        variant="secondary"
+                        size="icon"
+                        className={buttonBase}
+                        aria-label={t("terminal.toolbar.terminalSettings")}
+                        onClick={onOpenTheme}
+                    >
+                        <Palette size={12} />
+                    </Button>
+                </TooltipTrigger>
+                <TooltipContent>{t("terminal.toolbar.terminalSettings")}</TooltipContent>
+            </Tooltip>
 
             <HostKeywordHighlightPopover
                 host={host}
@@ -223,59 +159,57 @@ export const TerminalToolbar: React.FC<TerminalToolbarProps> = ({
                 buttonClassName={buttonBase}
             />
 
-            <Button
-                variant="secondary"
-                size="icon"
-                className={buttonBase}
-                title={t("terminal.toolbar.composeBar")}
-                aria-label={t("terminal.toolbar.composeBar")}
-                aria-pressed={isComposeBarOpen}
-                onClick={onToggleComposeBar}
-            >
-                <TextCursorInput size={12} />
-            </Button>
+            <Tooltip>
+                <TooltipTrigger asChild>
+                    <Button
+                        variant="secondary"
+                        size="icon"
+                        className={buttonBase}
+                        aria-label={t("terminal.toolbar.composeBar")}
+                        aria-pressed={isComposeBarOpen}
+                        onClick={onToggleComposeBar}
+                    >
+                        <TextCursorInput size={12} />
+                    </Button>
+                </TooltipTrigger>
+                <TooltipContent>{t("terminal.toolbar.composeBar")}</TooltipContent>
+            </Tooltip>
 
-            <Button
-                variant="secondary"
-                size="icon"
-                className={buttonBase}
-                title={t("terminal.toolbar.searchTerminal")}
-                aria-label={t("terminal.toolbar.searchTerminal")}
-                aria-pressed={isSearchOpen}
-                onClick={onToggleSearch}
-            >
-                <Search size={12} />
-            </Button>
+            <Tooltip>
+                <TooltipTrigger asChild>
+                    <Button
+                        variant="secondary"
+                        size="icon"
+                        className={buttonBase}
+                        aria-label={t("terminal.toolbar.searchTerminal")}
+                        aria-pressed={isSearchOpen}
+                        onClick={onToggleSearch}
+                    >
+                        <Search size={12} />
+                    </Button>
+                </TooltipTrigger>
+                <TooltipContent>{t("terminal.toolbar.searchTerminal")}</TooltipContent>
+            </Tooltip>
 
             {showClose && onClose && (
-                <Button
-                    variant="ghost"
-                    size="icon"
-                    className="h-6 w-6 text-[color:var(--terminal-toolbar-fg)] hover:bg-transparent"
-                    onClick={(e) => {
-                        e.stopPropagation();
-                        onClose();
-                    }}
-                    title={t("terminal.toolbar.closeSession")}
-                >
-                    <X size={11} />
-                </Button>
+                <Tooltip>
+                    <TooltipTrigger asChild>
+                        <Button
+                            variant="ghost"
+                            size="icon"
+                            className="h-6 w-6 text-[color:var(--terminal-toolbar-fg)] hover:bg-transparent"
+                            onClick={(e) => {
+                                e.stopPropagation();
+                                onClose();
+                            }}
+                        >
+                            <X size={11} />
+                        </Button>
+                    </TooltipTrigger>
+                    <TooltipContent>{t("terminal.toolbar.closeSession")}</TooltipContent>
+                </Tooltip>
             )}
-
-            <ThemeCustomizeModal
-                open={themeModalOpen}
-                onClose={() => setThemeModalOpen(false)}
-                currentThemeId={currentThemeId}
-                currentFontFamilyId={currentFontFamilyId}
-                currentFontSize={currentFontSize}
-                onThemeChange={handleThemeChange}
-                onFontFamilyChange={handleFontFamilyChange}
-                onFontSizeChange={handleFontSizeChange}
-                onSave={() => {
-                    // Trigger any necessary updates
-                }}
-            />
-        </>
+        </TooltipProvider>
     );
 };
 

components/terminal/ThemeSidePanel.tsx

@@ -0,0 +1,430 @@
+/**
+ * ThemeSidePanel - Theme/Font customization panel for the terminal side panel
+ *
+ * Adapted from ThemeCustomizeModal's left panel content.
+ * No preview - the actual terminal behind serves as a live preview.
+ * Changes apply in real-time.
+ */
+
+import React, { memo, useCallback, useMemo, useRef, useState } from 'react';
+import { Check, Download, Minus, Palette, Pencil, Plus, Sparkles, Type } from 'lucide-react';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import { useAvailableFonts } from '../../application/state/fontStore';
+import { TERMINAL_THEMES, TerminalThemeConfig } from '../../infrastructure/config/terminalThemes';
+import { MIN_FONT_SIZE, MAX_FONT_SIZE, TerminalFont } from '../../infrastructure/config/fonts';
+import { useCustomThemes, useCustomThemeActions } from '../../application/state/customThemeStore';
+import { parseItermcolors } from '../../infrastructure/parsers/itermcolorsParser';
+import { CustomThemeModal } from './CustomThemeModal';
+import { cn } from '../../lib/utils';
+import { TerminalTheme } from '../../domain/models';
+import { ScrollArea } from '../ui/scroll-area';
+
+type TabType = 'theme' | 'font' | 'custom';
+
+// Memoized theme item component
+const ThemeItem = memo(({
+  theme,
+  isSelected,
+  onSelect,
+  onEdit,
+}: {
+  theme: TerminalThemeConfig;
+  isSelected: boolean;
+  onSelect: (id: string) => void;
+  onEdit?: (id: string) => void;
+}) => (
+  <div
+    role="button"
+    tabIndex={0}
+    onClick={() => onSelect(theme.id)}
+    onKeyDown={(e) => { if (e.key === 'Enter' || e.key === ' ') { e.preventDefault(); onSelect(theme.id); } }}
+    className={cn(
+      'w-full flex items-center gap-2.5 px-3 py-2 text-left transition-colors group cursor-pointer',
+      isSelected
+        ? 'bg-accent/50'
+        : 'hover:bg-accent/50'
+    )}
+  >
+    {/* Color swatch */}
+    <div
+      className="w-6 h-6 rounded-md flex-shrink-0 flex flex-col justify-center items-start pl-0.5 gap-0.5 border border-border/50"
+      style={{ backgroundColor: theme.colors.background }}
+    >
+      <div className="h-0.5 w-2.5 rounded-full" style={{ backgroundColor: theme.colors.green }} />
+      <div className="h-0.5 w-4 rounded-full" style={{ backgroundColor: theme.colors.blue }} />
+      <div className="h-0.5 w-1.5 rounded-full" style={{ backgroundColor: theme.colors.yellow }} />
+    </div>
+    <div className="flex-1 min-w-0">
+      <div className="text-xs font-medium truncate">
+        {theme.name}
+      </div>
+      <div className="text-[10px] text-muted-foreground capitalize">
+        {theme.type}
+        {theme.isCustom && ' • custom'}
+      </div>
+    </div>
+    {onEdit && (
+      <div
+        role="button"
+        tabIndex={0}
+        onClick={(e) => { e.stopPropagation(); onEdit(theme.id); }}
+        onKeyDown={(e) => { if (e.key === 'Enter' || e.key === ' ') { e.stopPropagation(); e.preventDefault(); onEdit(theme.id); } }}
+        className="w-5 h-5 rounded flex items-center justify-center text-muted-foreground hover:text-foreground hover:bg-muted/80 opacity-0 group-hover:opacity-100 transition-all"
+      >
+        <Pencil size={10} />
+      </div>
+    )}
+    {isSelected && !onEdit && (
+      <Check size={12} className="text-primary flex-shrink-0" />
+    )}
+  </div>
+));
+ThemeItem.displayName = 'ThemeItem';
+
+// Memoized font item component
+const FontItem = memo(({
+  font,
+  isSelected,
+  onSelect
+}: {
+  font: TerminalFont;
+  isSelected: boolean;
+  onSelect: (id: string) => void;
+}) => (
+  <button
+    onClick={() => onSelect(font.id)}
+    className={cn(
+      'w-full flex items-center gap-2.5 px-3 py-2 text-left transition-colors',
+      isSelected
+        ? 'bg-accent/50'
+        : 'hover:bg-accent/50'
+    )}
+  >
+    <div className="flex-1 min-w-0">
+      <div
+        className="text-xs font-medium truncate"
+        style={{ fontFamily: font.family }}
+      >
+        {font.name}
+      </div>
+      <div className="text-[10px] text-muted-foreground truncate">{font.description}</div>
+    </div>
+    {isSelected && (
+      <Check size={12} className="text-primary flex-shrink-0" />
+    )}
+  </button>
+));
+FontItem.displayName = 'FontItem';
+
+interface ThemeSidePanelProps {
+  currentThemeId: string;
+  currentFontFamilyId: string;
+  currentFontSize: number;
+  onThemeChange: (themeId: string) => void;
+  onFontFamilyChange: (fontFamilyId: string) => void;
+  onFontSizeChange: (fontSize: number) => void;
+  isVisible?: boolean;
+}
+
+const ThemeSidePanelInner: React.FC<ThemeSidePanelProps> = ({
+  currentThemeId,
+  currentFontFamilyId,
+  currentFontSize,
+  onThemeChange,
+  onFontFamilyChange,
+  onFontSizeChange,
+  isVisible = true,
+}) => {
+  const { t } = useI18n();
+  const availableFonts = useAvailableFonts();
+  const customThemes = useCustomThemes();
+  const { addTheme, updateTheme, deleteTheme } = useCustomThemeActions();
+
+  const [activeTab, setActiveTab] = useState<TabType>('theme');
+  const [editingTheme, setEditingTheme] = useState<TerminalTheme | null>(null);
+  const [isNewTheme, setIsNewTheme] = useState(false);
+  const fileInputRef = useRef<HTMLInputElement>(null);
+
+  const allThemes = useMemo(
+    () => [...TERMINAL_THEMES, ...customThemes],
+    [customThemes]
+  );
+
+  const handleThemeSelect = useCallback((themeId: string) => {
+    setEditingTheme(null);
+    onThemeChange(themeId);
+  }, [onThemeChange]);
+
+  const handleFontSelect = useCallback((fontId: string) => {
+    onFontFamilyChange(fontId);
+  }, [onFontFamilyChange]);
+
+  const handleFontSizeChange = useCallback((delta: number) => {
+    const newSize = Math.max(MIN_FONT_SIZE, Math.min(MAX_FONT_SIZE, currentFontSize + delta));
+    onFontSizeChange(newSize);
+  }, [currentFontSize, onFontSizeChange]);
+
+  const handleNewTheme = useCallback(() => {
+    const base = allThemes.find(t => t.id === currentThemeId) || TERMINAL_THEMES[0];
+    const newTheme: TerminalTheme = {
+      ...base,
+      id: `custom-${Date.now()}`,
+      name: `${base.name} (Custom)`,
+      isCustom: true,
+      colors: { ...base.colors },
+    };
+    setEditingTheme(newTheme);
+    setIsNewTheme(true);
+  }, [currentThemeId, allThemes]);
+
+  const handleImportFile = useCallback(() => {
+    fileInputRef.current?.click();
+  }, []);
+
+  const handleFileSelected = useCallback((e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0];
+    if (!file) return;
+    const name = file.name.replace(/\.(itermcolors|xml)$/i, '');
+    const reader = new FileReader();
+    reader.onload = () => {
+      const xml = reader.result as string;
+      const parsed = parseItermcolors(xml, name);
+      if (parsed) {
+        addTheme(parsed);
+        onThemeChange(parsed.id);
+        setActiveTab('theme');
+      } else {
+        window.alert(t('terminal.customTheme.importError') || 'Failed to parse the selected file.');
+      }
+    };
+    reader.readAsText(file);
+    e.target.value = '';
+  }, [addTheme, onThemeChange, t]);
+
+  const handleEditTheme = useCallback((themeId: string) => {
+    const theme = customThemes.find(t => t.id === themeId);
+    if (theme) {
+      setEditingTheme({ ...theme, colors: { ...theme.colors } });
+      setIsNewTheme(false);
+    }
+  }, [customThemes]);
+
+  const handleEditorDelete = useCallback((themeId: string) => {
+    deleteTheme(themeId);
+    if (currentThemeId === themeId) {
+      onThemeChange(TERMINAL_THEMES[0].id);
+    }
+    setEditingTheme(null);
+    setIsNewTheme(false);
+  }, [deleteTheme, currentThemeId, onThemeChange]);
+
+  if (!isVisible) return null;
+
+  const builtinThemes = TERMINAL_THEMES;
+
+  return (
+    <>
+      <div className="h-full flex flex-col bg-background overflow-hidden">
+        {/* Tab Bar */}
+        <div className="flex p-1.5 gap-0.5 shrink-0 border-b border-border/50">
+          <button
+            onClick={() => { setActiveTab('theme'); setEditingTheme(null); }}
+            className={cn(
+              'flex-1 flex items-center justify-center gap-1 px-1.5 py-1.5 rounded-md text-[11px] font-medium transition-all',
+              activeTab === 'theme'
+                ? 'bg-primary/15 text-primary'
+                : 'text-muted-foreground hover:text-foreground hover:bg-muted'
+            )}
+          >
+            <Palette size={12} />
+            {t('terminal.themeModal.tab.theme')}
+          </button>
+          <button
+            onClick={() => setActiveTab('font')}
+            className={cn(
+              'flex-1 flex items-center justify-center gap-1 px-1.5 py-1.5 rounded-md text-[11px] font-medium transition-all',
+              activeTab === 'font'
+                ? 'bg-primary/15 text-primary'
+                : 'text-muted-foreground hover:text-foreground hover:bg-muted'
+            )}
+          >
+            <Type size={12} />
+            {t('terminal.themeModal.tab.font')}
+          </button>
+          <button
+            onClick={() => setActiveTab('custom')}
+            className={cn(
+              'flex-1 flex items-center justify-center gap-1 px-1.5 py-1.5 rounded-md text-[11px] font-medium transition-all',
+              activeTab === 'custom'
+                ? 'bg-primary/15 text-primary'
+                : 'text-muted-foreground hover:text-foreground hover:bg-muted'
+            )}
+          >
+            <Sparkles size={12} />
+            {t('terminal.themeModal.tab.custom')}
+          </button>
+        </div>
+
+        {/* List Content */}
+        <ScrollArea className="flex-1 min-h-0">
+          <div className="py-1">
+            {activeTab === 'theme' && (
+              <div>
+                {builtinThemes.map(theme => (
+                  <ThemeItem
+                    key={theme.id}
+                    theme={theme}
+                    isSelected={currentThemeId === theme.id && !editingTheme}
+                    onSelect={handleThemeSelect}
+                  />
+                ))}
+                {customThemes.length > 0 && (
+                  <>
+                    <div className="text-[9px] uppercase tracking-wider text-muted-foreground mt-2 mb-1 px-1 font-semibold">
+                      {t('terminal.customTheme.section')}
+                    </div>
+                    {customThemes.map(theme => (
+                      <ThemeItem
+                        key={theme.id}
+                        theme={theme}
+                        isSelected={currentThemeId === theme.id && !editingTheme}
+                        onSelect={handleThemeSelect}
+                        onEdit={handleEditTheme}
+                      />
+                    ))}
+                  </>
+                )}
+              </div>
+            )}
+            {activeTab === 'font' && (
+              <div>
+                {availableFonts.map(font => (
+                  <FontItem
+                    key={font.id}
+                    font={font}
+                    isSelected={currentFontFamilyId === font.id}
+                    onSelect={handleFontSelect}
+                  />
+                ))}
+              </div>
+            )}
+            {activeTab === 'custom' && !editingTheme && (
+              <div>
+                <button
+                  onClick={handleNewTheme}
+                  className="w-full flex items-center gap-2.5 px-3 py-2 text-left hover:bg-accent/50 transition-colors"
+                >
+                  <div className="w-6 h-6 rounded-md flex items-center justify-center bg-primary/10 text-primary shrink-0">
+                    <Plus size={12} />
+                  </div>
+                  <div>
+                    <div className="text-xs font-medium text-foreground">{t('terminal.customTheme.new')}</div>
+                    <div className="text-[10px] text-muted-foreground">{t('terminal.customTheme.newDesc')}</div>
+                  </div>
+                </button>
+                <button
+                  onClick={handleImportFile}
+                  className="w-full flex items-center gap-2.5 px-3 py-2 text-left hover:bg-accent/50 transition-colors"
+                >
+                  <div className="w-6 h-6 rounded-md flex items-center justify-center bg-blue-500/10 text-blue-500 shrink-0">
+                    <Download size={12} />
+                  </div>
+                  <div>
+                    <div className="text-xs font-medium text-foreground">{t('terminal.customTheme.import')}</div>
+                    <div className="text-[10px] text-muted-foreground">{t('terminal.customTheme.importDesc')}</div>
+                  </div>
+                </button>
+                <input
+                  ref={fileInputRef}
+                  type="file"
+                  accept=".itermcolors"
+                  onChange={handleFileSelected}
+                  className="hidden"
+                />
+                {customThemes.length > 0 && (
+                  <>
+                    <div className="text-[9px] uppercase tracking-wider text-muted-foreground mt-2 mb-1 px-1 font-semibold">
+                      {t('terminal.customTheme.yourThemes')}
+                    </div>
+                    {customThemes.map(theme => (
+                      <ThemeItem
+                        key={theme.id}
+                        theme={theme}
+                        isSelected={currentThemeId === theme.id}
+                        onSelect={handleThemeSelect}
+                        onEdit={handleEditTheme}
+                      />
+                    ))}
+                  </>
+                )}
+              </div>
+            )}
+          </div>
+        </ScrollArea>
+
+        {/* Font Size Control (only in font tab) */}
+        {activeTab === 'font' && (
+          <div className="p-2.5 border-t border-border/50 shrink-0">
+            <div className="text-[9px] uppercase tracking-wider text-muted-foreground mb-1.5 font-semibold">
+              {t('terminal.themeModal.fontSize')}
+            </div>
+            <div className="flex items-center justify-between gap-2 bg-muted/30 rounded-lg p-1.5">
+              <button
+                onClick={() => handleFontSizeChange(-1)}
+                disabled={currentFontSize <= MIN_FONT_SIZE}
+                className="w-7 h-7 rounded-md flex items-center justify-center bg-background hover:bg-accent text-foreground disabled:opacity-30 disabled:cursor-not-allowed transition-colors border border-border"
+              >
+                <Minus size={12} />
+              </button>
+              <div className="flex items-baseline gap-1">
+                <span className="text-lg font-bold text-foreground tabular-nums">{currentFontSize}</span>
+                <span className="text-[9px] text-muted-foreground">px</span>
+              </div>
+              <button
+                onClick={() => handleFontSizeChange(1)}
+                disabled={currentFontSize >= MAX_FONT_SIZE}
+                className="w-7 h-7 rounded-md flex items-center justify-center bg-background hover:bg-accent text-foreground disabled:opacity-30 disabled:cursor-not-allowed transition-colors border border-border"
+              >
+                <Plus size={12} />
+              </button>
+            </div>
+          </div>
+        )}
+
+        {/* Current selection info */}
+        <div className="px-2.5 py-1.5 border-t border-border/50 shrink-0">
+          <div className="text-[9px] text-muted-foreground truncate">
+            {allThemes.find(t => t.id === currentThemeId)?.name ?? currentThemeId} • {availableFonts.find(f => f.id === currentFontFamilyId)?.name ?? currentFontFamilyId} • {currentFontSize}px
+          </div>
+        </div>
+      </div>
+
+      {/* Custom Theme Editor Modal */}
+      {editingTheme && (
+        <CustomThemeModal
+          open={!!editingTheme}
+          theme={editingTheme}
+          isNew={isNewTheme}
+          onSave={(theme) => {
+            if (isNewTheme) {
+              addTheme(theme);
+              onThemeChange(theme.id);
+            } else {
+              updateTheme(theme.id, theme);
+              if (currentThemeId === theme.id) {
+                onThemeChange(theme.id);
+              }
+            }
+            setEditingTheme(null);
+            setIsNewTheme(false);
+          }}
+          onDelete={isNewTheme ? undefined : handleEditorDelete}
+          onCancel={() => { setEditingTheme(null); setIsNewTheme(false); }}
+        />
+      )}
+    </>
+  );
+};
+
+export const ThemeSidePanel = memo(ThemeSidePanelInner);
+ThemeSidePanel.displayName = 'ThemeSidePanel';

components/terminal/runtime/createTerminalSessionStarters.ts

@@ -11,6 +11,9 @@ import {
 } from "../../../domain/credentials";
 import { resolveHostAuth } from "../../../domain/sshAuth";
 
+/** Timeout of distro detection task */
+const DISTRO_DETECT_TIMEOUT = 8000; // ms
+
 type TerminalBackendApi = {
   backendAvailable: () => boolean;
   telnetAvailable: () => boolean;
@@ -215,7 +218,7 @@ const attachSessionToTerminal = (
 
 const runDistroDetection = async (
   ctx: TerminalSessionStartersContext,
-  auth: { username: string; password?: string; key?: SSHKey },
+  auth: { username: string; password?: string; key?: SSHKey; passphrase?: string },
 ) => {
   if (!ctx.terminalBackend.execAvailable()) return;
   try {
@@ -225,8 +228,9 @@ const runDistroDetection = async (
       port: ctx.host.port || 22,
       password: auth.password,
       privateKey: auth.key?.privateKey,
+      passphrase: auth.passphrase ?? auth.key?.passphrase,
       command: "cat /etc/os-release 2>/dev/null || uname -a",
-      timeout: 8000,
+      timeout: DISTRO_DETECT_TIMEOUT,
     });
     const data = `${res.stdout || ""}\n${res.stderr || ""}`;
     const idMatch = data.match(/^ID="?([\w-]+)"?$/im);
@@ -573,6 +577,7 @@ export const createTerminalSessionStarters = (ctx: TerminalSessionStartersContex
           username: effectiveUsername,
           password: usedPassword,
           key: usedKey,
+          passphrase: effectivePassphrase,
         }),
       600,
     );

components/terminal/runtime/createXTermRuntime.ts

@@ -94,6 +94,9 @@ export type CreateXTermRuntimeContext = {
 
   // Callback when shell reports CWD change via OSC 7
   onCwdChange?: (cwd: string) => void;
+
+  // Callback when remote requests clipboard read in 'prompt' mode; resolves to user's decision
+  onOsc52ReadRequest?: () => Promise<boolean>;
 };
 
 const detectPlatform = (): XTermPlatform => {
@@ -590,7 +593,7 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
 
   // Register OSC 7 handler using xterm.js parser
   // OSC 7 is the standard way for shells to report the current working directory
-  term.parser.registerOscHandler(7, (data) => {
+  const osc7Disposable = term.parser.registerOscHandler(7, (data) => {
     try {
       // data is the content after "7;" - typically "file://hostname/path"
       if (data.startsWith('file://')) {
@@ -614,6 +617,78 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
     return true; // Indicate we handled the sequence
   });
 
+  // OSC 52 — clipboard integration
+  // Format: 52;<target>;<base64-data>  (write)  or  52;<target>;?  (query/read)
+  // <target> is typically "c" (clipboard) or "p" (primary selection)
+  // Controlled by terminalSettings.osc52Clipboard: 'off' | 'write-only' | 'read-write'
+  const osc52Disposable = term.parser.registerOscHandler(52, (data) => {
+    const settings = ctx.terminalSettingsRef.current;
+    const mode = settings?.osc52Clipboard ?? 'write-only';
+    if (mode === 'off') return true;
+
+    try {
+      const semi = data.indexOf(';');
+      if (semi < 0) return true;
+      const target = data.substring(0, semi);
+      // Only handle clipboard target ('c'); reject unsupported targets like 'p' (PRIMARY)
+      if (target !== 'c' && target !== '') return true;
+      const payload = data.substring(semi + 1);
+
+      if (payload === '?') {
+        // Read request — allowed in read-write mode, or prompt user in prompt mode
+        if (mode !== 'read-write' && mode !== 'prompt') {
+          logger.debug('[XTerm] OSC 52 read request ignored (mode:', mode, ')');
+          return true;
+        }
+        const sessionId = ctx.sessionRef.current;
+        if (!sessionId) return true;
+        // Use Electron bridge as primary, fall back to navigator.clipboard
+        const readClipboard = async (): Promise<string> => {
+          try {
+            const bridge = netcattyBridge.get();
+            if (bridge?.readClipboardText) return await bridge.readClipboardText();
+          } catch {}
+          return navigator.clipboard.readText();
+        };
+        const doRead = async () => {
+          // In prompt mode, ask user first
+          if (mode === 'prompt') {
+            const allowed = ctx.onOsc52ReadRequest ? await ctx.onOsc52ReadRequest() : false;
+            if (!allowed) {
+              logger.debug('[XTerm] OSC 52 read denied by user');
+              return;
+            }
+          }
+          const text = await readClipboard();
+          // Chunked base64 encoding to avoid stack overflow on large payloads
+          const bytes = new TextEncoder().encode(text);
+          let binary = '';
+          for (let i = 0; i < bytes.length; i += 8192) {
+            binary += String.fromCharCode(...bytes.subarray(i, i + 8192));
+          }
+          const b64 = btoa(binary);
+          ctx.terminalBackend.writeToSession(sessionId, `\x1b]52;${target};${b64}\x07`);
+        };
+        doRead().catch((err) => {
+          logger.warn('[XTerm] OSC 52 clipboard read failed:', err);
+        });
+        return true;
+      }
+
+      // Write: payload is base64-encoded UTF-8 text
+      const binary = atob(payload);
+      const bytes = Uint8Array.from(binary, (c) => c.charCodeAt(0));
+      const text = new TextDecoder().decode(bytes);
+      navigator.clipboard.writeText(text).catch((err) => {
+        logger.warn('[XTerm] OSC 52 clipboard write failed:', err);
+      });
+      logger.debug('[XTerm] OSC 52 clipboard write', { length: text.length });
+    } catch (err) {
+      logger.warn('[XTerm] Failed to handle OSC 52:', err);
+    }
+    return true;
+  });
+
   let resizeTimeout: NodeJS.Timeout | null = null;
   const resizeDebounceMs = XTERM_PERFORMANCE_CONFIG.resize.debounceMs;
   term.onResize(({ cols, rows }) => {
@@ -638,6 +713,8 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
     dispose: () => {
       cleanupMiddleClick?.();
       keywordHighlighter.dispose();
+      osc7Disposable.dispose();
+      osc52Disposable.dispose();
       try {
         term.dispose();
       } catch (err) {

components/ui/input-group.tsx

@@ -0,0 +1,91 @@
+import { cn } from '../../lib/utils';
+import type { ComponentProps, HTMLAttributes } from 'react';
+import { forwardRef } from 'react';
+
+export type InputGroupProps = HTMLAttributes<HTMLDivElement>;
+
+export const InputGroup = forwardRef<HTMLDivElement, InputGroupProps>(
+  ({ className, ...props }, ref) => (
+    <div
+      ref={ref}
+      className={cn(
+        'flex flex-col rounded-[22px] border border-border/65 bg-background/92 shadow-[0_18px_42px_rgba(0,0,0,0.34),inset_0_1px_0_rgba(255,255,255,0.04)] transition-[border-color,background-color,box-shadow]',
+        'supports-[backdrop-filter]:backdrop-blur-sm',
+        'focus-within:border-primary/45 focus-within:bg-background focus-within:ring-1 focus-within:ring-primary/20',
+        'overflow-hidden',
+        className,
+      )}
+      {...props}
+    />
+  ),
+);
+InputGroup.displayName = 'InputGroup';
+
+export type InputGroupTextareaProps = ComponentProps<'textarea'>;
+
+export const InputGroupTextarea = forwardRef<HTMLTextAreaElement, InputGroupTextareaProps>(
+  ({ className, ...props }, ref) => (
+    <textarea
+      ref={ref}
+      className={cn(
+        'w-full resize-none bg-transparent text-[13px] text-foreground/92 selection:bg-primary/25',
+        'placeholder:text-muted-foreground/62 placeholder:font-medium placeholder:text-[13px]',
+        'focus:outline-none disabled:opacity-40 disabled:cursor-not-allowed',
+        'px-4 pt-3.5 pb-2 leading-[20px]',
+        'field-sizing-content min-h-[82px] max-h-52',
+        className,
+      )}
+      {...props}
+    />
+  ),
+);
+InputGroupTextarea.displayName = 'InputGroupTextarea';
+
+export type InputGroupAddonProps = HTMLAttributes<HTMLDivElement> & {
+  align?: 'block-start' | 'block-end';
+};
+
+export const InputGroupAddon = forwardRef<HTMLDivElement, InputGroupAddonProps>(
+  ({ className, align = 'block-end', ...props }, ref) => (
+    <div
+      ref={ref}
+      className={cn(
+        'flex items-center px-2.5 py-1.5',
+        align === 'block-start' && 'border-b border-border/35 bg-muted/8',
+        align === 'block-end' && 'border-t border-border/60 bg-muted/10',
+        className,
+      )}
+      {...props}
+    />
+  ),
+);
+InputGroupAddon.displayName = 'InputGroupAddon';
+
+export type InputGroupButtonProps = ComponentProps<'button'> & {
+  variant?: 'default' | 'ghost' | 'outline' | 'destructive';
+  size?: 'sm' | 'icon-sm' | 'default';
+};
+
+export const InputGroupButton = forwardRef<HTMLButtonElement, InputGroupButtonProps>(
+  ({ className, variant = 'ghost', size = 'icon-sm', disabled, ...props }, ref) => (
+    <button
+      ref={ref}
+      type="button"
+      disabled={disabled}
+      className={cn(
+        'inline-flex items-center justify-center rounded-md transition-colors cursor-pointer',
+        'disabled:opacity-30 disabled:cursor-default',
+        size === 'icon-sm' && 'h-7 w-7',
+        size === 'sm' && 'h-7 px-2 text-[12px] gap-1',
+        size === 'default' && 'h-8 px-3 text-[13px] gap-1.5',
+        variant === 'ghost' && 'text-muted-foreground/78 hover:text-foreground hover:bg-muted/45',
+        variant === 'default' && 'bg-primary/80 text-primary-foreground hover:bg-primary',
+        variant === 'outline' && 'border border-border/40 text-muted-foreground/85 hover:text-foreground hover:bg-muted/35',
+        variant === 'destructive' && 'text-destructive/70 hover:text-destructive hover:bg-destructive/10',
+        className,
+      )}
+      {...props}
+    />
+  ),
+);
+InputGroupButton.displayName = 'InputGroupButton';

components/ui/scroll-area.tsx

@@ -12,7 +12,7 @@ const ScrollArea = React.forwardRef<
     className={cn("relative overflow-hidden", className)}
     {...props}
   >
-    <ScrollAreaPrimitive.Viewport className="h-full w-full rounded-[inherit]">
+    <ScrollAreaPrimitive.Viewport className="h-full w-full max-h-[inherit] rounded-[inherit]">
       {children}
     </ScrollAreaPrimitive.Viewport>
     <ScrollBar />

components/ui/spinner.tsx

@@ -0,0 +1,9 @@
+import { cn } from '../../lib/utils';
+import { Loader2 } from 'lucide-react';
+import type { ComponentProps } from 'react';
+
+export type SpinnerProps = ComponentProps<typeof Loader2>;
+
+export const Spinner = ({ className, size = 16, ...props }: SpinnerProps) => (
+  <Loader2 className={cn('animate-spin', className)} size={size} {...props} />
+);

domain/models.ts

@@ -434,6 +434,9 @@ export interface TerminalSettings {
   // Paste
   disableBracketedPaste: boolean; // Disable bracketed paste mode (avoid ^[[200~ artifacts)
 
+  // Clipboard
+  osc52Clipboard: 'off' | 'write-only' | 'read-write' | 'prompt'; // OSC-52 clipboard access: off, write-only (default), read-write, or prompt on read
+
   // Rendering
   rendererType: 'auto' | 'webgl' | 'canvas'; // Terminal renderer: auto (detect based on hardware), webgl, or canvas
 }
@@ -541,6 +544,7 @@ export const DEFAULT_TERMINAL_SETTINGS: TerminalSettings = {
   showServerStats: true, // Show server stats by default
   serverStatsRefreshInterval: 5, // Refresh every 5 seconds
   disableBracketedPaste: false, // Bracketed paste enabled by default
+  osc52Clipboard: 'write-only', // OSC-52: allow remote programs to write clipboard by default
   rendererType: 'auto', // Auto-detect best renderer based on hardware
 };
 
@@ -664,6 +668,10 @@ export interface TransferTask {
   targetPath: string;
   sourceConnectionId: string;
   targetConnectionId: string;
+  targetHostId?: string;
+  /** Full endpoint key (hostId:hostname:port:protocol) for distinguishing
+   * same-hostId uploads with different session-time overrides. */
+  targetConnectionKey?: string;
   direction: TransferDirection;
   status: TransferStatus;
   totalBytes: number;

domain/sync.ts

@@ -52,6 +52,7 @@ export interface WebDAVConfig {
   username?: string;
   password?: string;
   token?: string;
+  allowInsecure?: boolean;
 }
 
 export interface S3Config {
@@ -171,13 +172,30 @@ export interface SyncPayload {
   
   // Settings
   settings?: {
+    // Theme & Appearance
     theme?: 'light' | 'dark' | 'system';
-    accentColor?: string;
+    lightUiThemeId?: string;
+    darkUiThemeId?: string;
+    accentMode?: 'theme' | 'custom';
+    customAccent?: string;
+    uiFontFamilyId?: string;
+    uiLanguage?: string;
+    customCSS?: string;
+    // Terminal
     terminalTheme?: string;
     terminalFontFamily?: string;
     terminalFontSize?: number;
-    hotkeyScheme?: string;
+    terminalSettings?: Record<string, unknown>;
+    customTerminalThemes?: Array<{ id: string; name: string; colors: Record<string, string> }>;
+    // Keyboard
     customKeyBindings?: Record<string, { mac?: string; pc?: string }>;
+    // Editor
+    editorWordWrap?: boolean;
+    // SFTP
+    sftpDoubleClickBehavior?: 'open' | 'transfer';
+    sftpAutoSync?: boolean;
+    sftpShowHiddenFiles?: boolean;
+    sftpUseCompressedUpload?: boolean;
   };
   
   // Sync metadata

domain/syncPayload.ts

@@ -16,6 +16,28 @@ import type {
   SSHKey,
 } from './models';
 import type { SyncPayload } from './sync';
+import { localStorageAdapter } from '../infrastructure/persistence/localStorageAdapter';
+import {
+  STORAGE_KEY_THEME,
+  STORAGE_KEY_UI_THEME_LIGHT,
+  STORAGE_KEY_UI_THEME_DARK,
+  STORAGE_KEY_ACCENT_MODE,
+  STORAGE_KEY_COLOR,
+  STORAGE_KEY_UI_FONT_FAMILY,
+  STORAGE_KEY_UI_LANGUAGE,
+  STORAGE_KEY_CUSTOM_CSS,
+  STORAGE_KEY_TERM_THEME,
+  STORAGE_KEY_TERM_FONT_FAMILY,
+  STORAGE_KEY_TERM_FONT_SIZE,
+  STORAGE_KEY_TERM_SETTINGS,
+  STORAGE_KEY_CUSTOM_KEY_BINDINGS,
+  STORAGE_KEY_EDITOR_WORD_WRAP,
+  STORAGE_KEY_SFTP_DOUBLE_CLICK_BEHAVIOR,
+  STORAGE_KEY_SFTP_AUTO_SYNC,
+  STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES,
+  STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD,
+  STORAGE_KEY_CUSTOM_THEMES,
+} from '../infrastructure/config/storageKeys';
 
 // ---------------------------------------------------------------------------
 // Input types
@@ -38,6 +60,157 @@ export interface SyncPayloadImporters {
   importVaultData: (jsonString: string) => void;
   /** Import port-forwarding rules (lives outside the vault hook). */
   importPortForwardingRules?: (rules: PortForwardingRule[]) => void;
+  /** Called after synced settings have been written to localStorage. */
+  onSettingsApplied?: () => void;
+}
+
+// ---------------------------------------------------------------------------
+// Settings sync helpers
+// ---------------------------------------------------------------------------
+
+/** Terminal settings keys that are safe to sync (platform-agnostic). */
+const SYNCABLE_TERMINAL_KEYS = [
+  'scrollback', 'drawBoldInBrightColors', 'fontLigatures', 'fontWeight', 'fontWeightBold',
+  'linePadding', 'cursorShape', 'cursorBlink', 'minimumContrastRatio',
+  'scrollOnInput', 'scrollOnOutput', 'scrollOnKeyPress', 'scrollOnPaste',
+  'rightClickBehavior', 'copyOnSelect', 'middleClickPaste', 'wordSeparators',
+  'linkModifier', 'keywordHighlightEnabled', 'keywordHighlightRules',
+  'keepaliveInterval', 'disableBracketedPaste', 'osc52Clipboard',
+] as const;
+
+/**
+ * Collect all syncable settings from localStorage.
+ */
+export function collectSyncableSettings(): SyncPayload['settings'] {
+  const settings: SyncPayload['settings'] = {};
+
+  // Theme & Appearance
+  const theme = localStorageAdapter.readString(STORAGE_KEY_THEME);
+  if (theme === 'light' || theme === 'dark' || theme === 'system') settings.theme = theme;
+  const lightUi = localStorageAdapter.readString(STORAGE_KEY_UI_THEME_LIGHT);
+  if (lightUi) settings.lightUiThemeId = lightUi;
+  const darkUi = localStorageAdapter.readString(STORAGE_KEY_UI_THEME_DARK);
+  if (darkUi) settings.darkUiThemeId = darkUi;
+  const accentMode = localStorageAdapter.readString(STORAGE_KEY_ACCENT_MODE);
+  if (accentMode === 'theme' || accentMode === 'custom') settings.accentMode = accentMode;
+  const accent = localStorageAdapter.readString(STORAGE_KEY_COLOR);
+  if (accent) settings.customAccent = accent;
+  const uiFont = localStorageAdapter.readString(STORAGE_KEY_UI_FONT_FAMILY);
+  if (uiFont) settings.uiFontFamilyId = uiFont;
+  const lang = localStorageAdapter.readString(STORAGE_KEY_UI_LANGUAGE);
+  if (lang) settings.uiLanguage = lang;
+  const css = localStorageAdapter.readString(STORAGE_KEY_CUSTOM_CSS);
+  if (css != null) settings.customCSS = css;
+
+  // Terminal
+  const termTheme = localStorageAdapter.readString(STORAGE_KEY_TERM_THEME);
+  if (termTheme) settings.terminalTheme = termTheme;
+  const termFont = localStorageAdapter.readString(STORAGE_KEY_TERM_FONT_FAMILY);
+  if (termFont) settings.terminalFontFamily = termFont;
+  const termSize = localStorageAdapter.readNumber(STORAGE_KEY_TERM_FONT_SIZE);
+  if (termSize != null) settings.terminalFontSize = termSize;
+
+  // Terminal settings (syncable subset only)
+  const termSettingsRaw = localStorageAdapter.readString(STORAGE_KEY_TERM_SETTINGS);
+  if (termSettingsRaw) {
+    try {
+      const full = JSON.parse(termSettingsRaw);
+      const subset: Record<string, unknown> = {};
+      for (const key of SYNCABLE_TERMINAL_KEYS) {
+        if (key in full) subset[key] = full[key];
+      }
+      if (Object.keys(subset).length > 0) settings.terminalSettings = subset;
+    } catch { /* ignore corrupt data */ }
+  }
+
+  // Custom terminal themes
+  const customThemesRaw = localStorageAdapter.readString(STORAGE_KEY_CUSTOM_THEMES);
+  if (customThemesRaw) {
+    try {
+      const parsed = JSON.parse(customThemesRaw);
+      if (Array.isArray(parsed)) settings.customTerminalThemes = parsed;
+    } catch { /* ignore */ }
+  }
+
+  // Keyboard
+  const kb = localStorageAdapter.readString(STORAGE_KEY_CUSTOM_KEY_BINDINGS);
+  if (kb) {
+    try {
+      settings.customKeyBindings = JSON.parse(kb);
+    } catch { /* ignore */ }
+  }
+
+  // Editor
+  const wordWrap = localStorageAdapter.readString(STORAGE_KEY_EDITOR_WORD_WRAP);
+  if (wordWrap === 'true' || wordWrap === 'false') settings.editorWordWrap = wordWrap === 'true';
+
+  // SFTP
+  const dblClick = localStorageAdapter.readString(STORAGE_KEY_SFTP_DOUBLE_CLICK_BEHAVIOR);
+  if (dblClick === 'open' || dblClick === 'transfer') settings.sftpDoubleClickBehavior = dblClick;
+  const autoSync = localStorageAdapter.readString(STORAGE_KEY_SFTP_AUTO_SYNC);
+  if (autoSync === 'true' || autoSync === 'false') settings.sftpAutoSync = autoSync === 'true';
+  const hidden = localStorageAdapter.readString(STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES);
+  if (hidden === 'true' || hidden === 'false') settings.sftpShowHiddenFiles = hidden === 'true';
+  const compress = localStorageAdapter.readString(STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD);
+  if (compress === 'true' || compress === 'false') settings.sftpUseCompressedUpload = compress === 'true';
+
+  return Object.keys(settings).length > 0 ? settings : undefined;
+}
+
+/**
+ * Apply synced settings to localStorage. Merges terminal settings
+ * to preserve platform-specific fields.
+ */
+export function applySyncableSettings(settings: NonNullable<SyncPayload['settings']>): void {
+  // Theme & Appearance
+  if (settings.theme != null) localStorageAdapter.writeString(STORAGE_KEY_THEME, settings.theme);
+  if (settings.lightUiThemeId != null) localStorageAdapter.writeString(STORAGE_KEY_UI_THEME_LIGHT, settings.lightUiThemeId);
+  if (settings.darkUiThemeId != null) localStorageAdapter.writeString(STORAGE_KEY_UI_THEME_DARK, settings.darkUiThemeId);
+  if (settings.accentMode != null) localStorageAdapter.writeString(STORAGE_KEY_ACCENT_MODE, settings.accentMode);
+  if (settings.customAccent != null) localStorageAdapter.writeString(STORAGE_KEY_COLOR, settings.customAccent);
+  if (settings.uiFontFamilyId != null) localStorageAdapter.writeString(STORAGE_KEY_UI_FONT_FAMILY, settings.uiFontFamilyId);
+  if (settings.uiLanguage != null) localStorageAdapter.writeString(STORAGE_KEY_UI_LANGUAGE, settings.uiLanguage);
+  if (settings.customCSS != null) localStorageAdapter.writeString(STORAGE_KEY_CUSTOM_CSS, settings.customCSS);
+
+  // Terminal
+  if (settings.terminalTheme != null) localStorageAdapter.writeString(STORAGE_KEY_TERM_THEME, settings.terminalTheme);
+  if (settings.terminalFontFamily != null) localStorageAdapter.writeString(STORAGE_KEY_TERM_FONT_FAMILY, settings.terminalFontFamily);
+  if (settings.terminalFontSize != null) localStorageAdapter.writeString(STORAGE_KEY_TERM_FONT_SIZE, String(settings.terminalFontSize));
+
+  // Terminal settings — merge with existing to preserve platform-specific keys
+  if (settings.terminalSettings) {
+    let existing: Record<string, unknown> = {};
+    const raw = localStorageAdapter.readString(STORAGE_KEY_TERM_SETTINGS);
+    if (raw) {
+      try { existing = JSON.parse(raw); } catch { /* ignore */ }
+    }
+    const merged = { ...existing };
+    for (const key of SYNCABLE_TERMINAL_KEYS) {
+      if (key in settings.terminalSettings) {
+        merged[key] = settings.terminalSettings[key];
+      }
+    }
+    localStorageAdapter.writeString(STORAGE_KEY_TERM_SETTINGS, JSON.stringify(merged));
+  }
+
+  // Custom terminal themes
+  if (settings.customTerminalThemes != null) {
+    localStorageAdapter.writeString(STORAGE_KEY_CUSTOM_THEMES, JSON.stringify(settings.customTerminalThemes));
+  }
+
+  // Keyboard
+  if (settings.customKeyBindings != null) {
+    localStorageAdapter.writeString(STORAGE_KEY_CUSTOM_KEY_BINDINGS, JSON.stringify(settings.customKeyBindings));
+  }
+
+  // Editor
+  if (settings.editorWordWrap != null) localStorageAdapter.writeString(STORAGE_KEY_EDITOR_WORD_WRAP, String(settings.editorWordWrap));
+
+  // SFTP
+  if (settings.sftpDoubleClickBehavior != null) localStorageAdapter.writeString(STORAGE_KEY_SFTP_DOUBLE_CLICK_BEHAVIOR, settings.sftpDoubleClickBehavior);
+  if (settings.sftpAutoSync != null) localStorageAdapter.writeString(STORAGE_KEY_SFTP_AUTO_SYNC, String(settings.sftpAutoSync));
+  if (settings.sftpShowHiddenFiles != null) localStorageAdapter.writeString(STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES, String(settings.sftpShowHiddenFiles));
+  if (settings.sftpUseCompressedUpload != null) localStorageAdapter.writeString(STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD, String(settings.sftpUseCompressedUpload));
 }
 
 // ---------------------------------------------------------------------------
@@ -64,6 +237,7 @@ export function buildSyncPayload(
     snippetPackages: vault.snippetPackages,
     knownHosts: vault.knownHosts,
     portForwardingRules,
+    settings: collectSyncableSettings(),
     syncedAt: Date.now(),
   };
 }
@@ -105,4 +279,10 @@ export function applySyncPayload(
   if (payload.portForwardingRules !== undefined && importers.importPortForwardingRules) {
     importers.importPortForwardingRules(payload.portForwardingRules);
   }
+
+  // Apply synced settings
+  if (payload.settings) {
+    applySyncableSettings(payload.settings);
+    importers.onSettingsApplied?.();
+  }
 }

electron-builder.config.cjs

@@ -20,7 +20,18 @@ module.exports = {
     asarUnpack: [
         'node_modules/node-pty/**/*',
         'node_modules/ssh2/**/*',
-        'node_modules/cpu-features/**/*'
+        'node_modules/cpu-features/**/*',
+        'node_modules/@zed-industries/codex-acp/**/*',
+        'node_modules/@zed-industries/codex-acp-*/**/*',
+        'node_modules/@modelcontextprotocol/sdk/**/*',
+        'node_modules/zod/**/*',
+        'node_modules/zod-to-json-schema/**/*',
+        'node_modules/ajv/**/*',
+        'node_modules/ajv-formats/**/*',
+        'node_modules/fast-deep-equal/**/*',
+        'node_modules/fast-uri/**/*',
+        'node_modules/json-schema-traverse/**/*',
+        'electron/mcp/**/*'
     ],
     mac: {
         target: [

electron/bridges/ai/codexHelpers.cjs

@@ -0,0 +1,209 @@
+/**
+ * Codex-related helper functions and state.
+ *
+ * Manages Codex login sessions, auth validation cache, binary resolution,
+ * integration state normalization, and error / fingerprint utilities.
+ */
+"use strict";
+
+const { execFileSync } = require("node:child_process");
+const { createHash } = require("node:crypto");
+const { existsSync } = require("node:fs");
+const path = require("node:path");
+
+const { stripAnsi, extractFirstNonLocalhostUrl, toUnpackedAsarPath } = require("./shellUtils.cjs");
+
+// ── Module-level state ──
+
+const codexLoginSessions = new Map();
+let codexValidationCache = null;
+
+const CODEX_AUTH_HINTS = [
+  "not logged in",
+  "authentication required",
+  "auth required",
+  "login required",
+  "missing credentials",
+  "no credentials",
+  "unauthorized",
+  "forbidden",
+  "codex login",
+  "401",
+  "403",
+  "invalid_grant",
+  "invalid_token",
+  "credentials",
+];
+
+// ── Package / binary resolution ──
+
+function getCodexPackageName() {
+  const key = `${process.platform}-${process.arch}`;
+  switch (key) {
+    case "darwin-arm64":
+      return "@zed-industries/codex-acp-darwin-arm64";
+    case "darwin-x64":
+      return "@zed-industries/codex-acp-darwin-x64";
+    case "linux-arm64":
+      return "@zed-industries/codex-acp-linux-arm64";
+    case "linux-x64":
+      return "@zed-industries/codex-acp-linux-x64";
+    case "win32-arm64":
+      return "@zed-industries/codex-acp-win32-arm64";
+    case "win32-x64":
+      return "@zed-industries/codex-acp-win32-x64";
+    default:
+      return null;
+  }
+}
+
+function resolveCodexAcpBinaryPath(shellEnv, electronModule) {
+  const binaryName = process.platform === "win32" ? "codex-acp.exe" : "codex-acp";
+  const isPackaged = electronModule?.app?.isPackaged;
+
+  // Dev mode: prefer system PATH
+  if (!isPackaged && shellEnv) {
+    try {
+      const whichCmd = process.platform === "win32" ? "where" : "which";
+      const systemPath = execFileSync(whichCmd, [binaryName], {
+        encoding: "utf8",
+        timeout: 3000,
+        stdio: ["pipe", "pipe", "pipe"],
+        env: shellEnv,
+      }).trim().split("\n")[0].trim();
+      if (systemPath && existsSync(systemPath)) {
+        return systemPath;
+      }
+    } catch {
+      // Not on PATH
+    }
+  }
+
+  // Packaged build (or dev fallback): use npm-bundled binary
+  try {
+    const pkgName = getCodexPackageName();
+    if (!pkgName) return binaryName;
+
+    const pkgRoot = path.dirname(require.resolve("@zed-industries/codex-acp/package.json"));
+    const resolved = require.resolve(`${pkgName}/bin/${binaryName}`, { paths: [pkgRoot] });
+    return toUnpackedAsarPath(resolved);
+  } catch {
+    return binaryName;
+  }
+}
+
+// ── Login session helpers ──
+
+function appendCodexLoginOutput(session, chunk) {
+  const cleanChunk = stripAnsi(chunk);
+  if (!cleanChunk) return;
+
+  session.output += cleanChunk;
+  if (!session.url) {
+    session.url = extractFirstNonLocalhostUrl(session.output);
+  }
+}
+
+function toCodexLoginSessionResponse(session) {
+  return {
+    sessionId: session.id,
+    state: session.state,
+    url: session.url,
+    output: session.output,
+    error: session.error,
+    exitCode: session.exitCode,
+  };
+}
+
+function getActiveCodexLoginSession() {
+  for (const session of codexLoginSessions.values()) {
+    if (session.state === "running" && session.process && !session.process.killed) {
+      return session;
+    }
+  }
+  return null;
+}
+
+// ── Integration state ──
+
+function normalizeCodexIntegrationState(rawOutput) {
+  const normalizedOutput = String(rawOutput || "").toLowerCase();
+
+  if (normalizedOutput.includes("logged in using chatgpt")) {
+    return "connected_chatgpt";
+  }
+  if (
+    normalizedOutput.includes("logged in using an api key") ||
+    normalizedOutput.includes("logged in using api key")
+  ) {
+    return "connected_api_key";
+  }
+  if (normalizedOutput.includes("not logged in")) {
+    return "not_logged_in";
+  }
+  return "unknown";
+}
+
+// ── Error helpers ──
+
+function extractCodexError(error) {
+  const message =
+    error?.data?.message ||
+    error?.errorText ||
+    error?.message ||
+    error?.error ||
+    String(error);
+  const code = error?.data?.code || error?.code;
+  return {
+    message: typeof message === "string" ? message : String(message),
+    code: typeof code === "string" ? code : undefined,
+  };
+}
+
+function isCodexAuthError(params) {
+  const searchableText = `${params?.code || ""} ${params?.message || ""}`.toLowerCase();
+  return CODEX_AUTH_HINTS.some((hint) => searchableText.includes(hint));
+}
+
+// ── Fingerprints ──
+
+function getCodexAuthFingerprint(apiKey) {
+  const normalized = String(apiKey || "").trim();
+  if (!normalized) return null;
+  return createHash("sha256").update(normalized).digest("hex");
+}
+
+function getCodexMcpFingerprint(mcpServers) {
+  return createHash("sha256").update(JSON.stringify(mcpServers || [])).digest("hex");
+}
+
+// ── Validation cache ──
+
+function invalidateCodexValidationCache() {
+  codexValidationCache = null;
+}
+
+function getCodexValidationCache() {
+  return codexValidationCache;
+}
+
+function setCodexValidationCache(value) {
+  codexValidationCache = value;
+}
+
+module.exports = {
+  codexLoginSessions,
+  getCodexPackageName,
+  resolveCodexAcpBinaryPath,
+  appendCodexLoginOutput,
+  toCodexLoginSessionResponse,
+  getActiveCodexLoginSession,
+  normalizeCodexIntegrationState,
+  extractCodexError,
+  isCodexAuthError,
+  getCodexAuthFingerprint,
+  getCodexMcpFingerprint,
+  invalidateCodexValidationCache,
+  getCodexValidationCache,
+  setCodexValidationCache,
+};

electron/bridges/ai/ptyExec.cjs

@@ -0,0 +1,197 @@
+/**
+ * PTY and SSH channel command execution.
+ *
+ * Provides a unified `execViaPty` that works for both MCP server bridge
+ * (tracking in activePtyExecs for cancellation) and Catty Agent
+ * (stripping MCP markers from output).
+ *
+ * Also provides `execViaChannel` for SSH exec channel fallback.
+ */
+"use strict";
+
+const crypto = require("crypto");
+const { stripAnsi } = require("./shellUtils.cjs");
+
+/**
+ * Execute command through a terminal PTY stream.
+ * The user sees the command typed and output in their terminal.
+ * Uses a unique marker to detect when the command finishes and capture the exit code.
+ *
+ * @param {object} ptyStream - The PTY stream to write to
+ * @param {string} command - The command to execute
+ * @param {object} [options]
+ * @param {boolean} [options.stripMarkers=false] - Strip leaked MCP markers from output
+ * @param {Map} [options.trackForCancellation] - Map to register this execution in for cancellation
+ * @param {number} [options.timeoutMs=60000] - Command timeout in milliseconds
+ */
+function execViaPty(ptyStream, command, options) {
+  const {
+    stripMarkers = false,
+    trackForCancellation = null,
+    timeoutMs = 60000,
+  } = options || {};
+
+  const marker = `__NCMCP_${Date.now().toString(36)}_${crypto.randomBytes(16).toString('hex')}__`;
+
+  return new Promise((resolve) => {
+    let output = "";
+    let foundStart = false;
+    let timeoutId = null;
+    let finished = false;
+
+    const onData = (data) => {
+      const text = data.toString();
+
+      if (!foundStart) {
+        // Look for the start marker at a line boundary (actual printf output),
+        // not inside the echo of the printf command argument.
+        const startMarker = marker + "_S";
+        let pos = 0;
+        while (pos < text.length) {
+          const idx = text.indexOf(startMarker, pos);
+          if (idx === -1) break;
+          // Accept if at start of text, or preceded by \n or \r (line boundary)
+          if (idx === 0 || text[idx - 1] === '\n' || text[idx - 1] === '\r') {
+            foundStart = true;
+            const afterMarker = text.slice(idx);
+            const nlIdx = afterMarker.indexOf("\n");
+            if (nlIdx !== -1) {
+              output += afterMarker.slice(nlIdx + 1);
+            }
+            break;
+          }
+          pos = idx + 1;
+        }
+        if (foundStart) checkEnd();
+        return;
+      }
+
+      output += text;
+      checkEnd();
+    };
+
+    function checkEnd() {
+      // Look for the end marker at a line boundary (actual printf output),
+      // not inside the echo of the printf command argument.
+      const endPattern = marker + "_E:";
+      let searchFrom = 0;
+      while (searchFrom < output.length) {
+        const endIdx = output.indexOf(endPattern, searchFrom);
+        if (endIdx === -1) return;
+
+        // Accept if at start of output, or preceded by \n or \r (line boundary)
+        if (endIdx === 0 || output[endIdx - 1] === '\n' || output[endIdx - 1] === '\r') {
+          const afterEnd = output.slice(endIdx + endPattern.length);
+          const codeMatch = afterEnd.match(/^(\d+)/);
+          const exitCode = codeMatch ? parseInt(codeMatch[1], 10) : null;
+
+          const stdout = output.slice(0, endIdx);
+          finish(stdout, exitCode);
+          return;
+        }
+        searchFrom = endIdx + 1;
+      }
+    }
+
+    function finish(stdout, exitCode) {
+      if (finished) return;
+      finished = true;
+      clearTimeout(timeoutId);
+      ptyStream.removeListener("data", onData);
+      if (trackForCancellation) {
+        trackForCancellation.delete(marker);
+      }
+
+      let cleaned = stripAnsi(stdout || "").trim();
+      if (stripMarkers) {
+        cleaned = cleaned.replace(/__NCMCP_[^\r\n]*[\r\n]*/g, "").trim();
+      }
+      resolve({
+        ok: exitCode === 0 || exitCode === null,
+        stdout: cleaned,
+        stderr: "",
+        exitCode: exitCode ?? 0,
+      });
+    }
+
+    timeoutId = setTimeout(() => {
+      if (finished) return;
+      finished = true;
+      ptyStream.removeListener("data", onData);
+      if (trackForCancellation) {
+        trackForCancellation.delete(marker);
+      }
+      // Send Ctrl+C to kill the timed-out command
+      if (typeof ptyStream.write === "function") ptyStream.write("\x03");
+      const cleaned = stripAnsi(output).trim();
+      const timeoutSec = Math.round(timeoutMs / 1000);
+      resolve({ ok: false, stdout: cleaned, stderr: "", exitCode: -1, error: `Command timed out (${timeoutSec}s)` });
+    }, timeoutMs);
+
+    ptyStream.on("data", onData);
+
+    // Register for cancellation if tracking map provided
+    if (trackForCancellation) {
+      trackForCancellation.set(marker, {
+        ptyStream,
+        cleanup: () => { clearTimeout(timeoutId); ptyStream.removeListener("data", onData); },
+      });
+    }
+
+    // Markers are filtered from terminal display by preload.cjs (MCP_MARKER_RE).
+    const noPager = "PAGER=cat SYSTEMD_PAGER= GIT_PAGER=cat LESS= ";
+    ptyStream.write(
+      `printf '${marker}_S\\n';${noPager}${command}\n` +
+      `__nc=$?;printf '${marker}_E:'$__nc'\\n';(exit $__nc)\n`
+    );
+  });
+}
+
+/**
+ * Fallback: execute via a separate SSH exec channel (invisible to terminal).
+ *
+ * @param {object} sshClient - SSH client with .exec() method
+ * @param {string} command - The command to execute
+ * @param {object} [options]
+ * @param {number} [options.timeoutMs=60000] - Command timeout in milliseconds
+ */
+function execViaChannel(sshClient, command, options) {
+  const { timeoutMs = 60000 } = options || {};
+
+  return new Promise((resolve) => {
+    sshClient.exec(command, (err, execStream) => {
+      if (err) {
+        resolve({ ok: false, error: err.message });
+        return;
+      }
+      if (!execStream) {
+        resolve({ ok: false, output: 'Failed to create exec stream', exitCode: 1 });
+        return;
+      }
+      let stdout = "";
+      let stderr = "";
+      let finished = false;
+      const timeoutId = setTimeout(() => {
+        if (finished) return;
+        finished = true;
+        try { execStream.close(); } catch { /* ignore */ }
+        const timeoutSec = Math.round(timeoutMs / 1000);
+        resolve({ ok: false, stdout, stderr, exitCode: -1, error: `Command timed out (${timeoutSec}s)` });
+      }, timeoutMs);
+      execStream.on("data", (data) => { stdout += data.toString(); });
+      execStream.stderr.on("data", (data) => { stderr += data.toString(); });
+      execStream.on("close", (code) => {
+        if (finished) return;
+        finished = true;
+        clearTimeout(timeoutId);
+        resolve({ ok: code === 0, stdout, stderr, exitCode: code });
+      });
+    });
+  });
+}
+
+module.exports = {
+  execViaPty,
+  execViaChannel,
+  stripAnsi,
+};

electron/bridges/ai/shellUtils.cjs

@@ -0,0 +1,191 @@
+/**
+ * Shell utility functions shared across AI bridge modules.
+ *
+ * Provides ANSI stripping, URL extraction, CLI resolution, path helpers,
+ * stream chunk serialization, and cached shell environment resolution.
+ */
+"use strict";
+
+const { execFileSync } = require("node:child_process");
+const { existsSync } = require("node:fs");
+const path = require("node:path");
+
+// ── ANSI / URL regexes ──
+
+const ANSI_ESCAPE_REGEX = /\u001B\[[0-?]*[ -/]*[@-~]/g;
+const ANSI_OSC_REGEX = /\u001B\][^\u0007]*(?:\u0007|\u001B\\)/g;
+const URL_CANDIDATE_REGEX = /https?:\/\/[^\s]+/g;
+
+// ── ANSI stripping ──
+
+function stripAnsi(input) {
+  return String(input || "").replace(ANSI_OSC_REGEX, "").replace(ANSI_ESCAPE_REGEX, "");
+}
+
+// ── URL helpers ──
+
+function isLocalhostHostname(hostname) {
+  const normalized = String(hostname || "").trim().toLowerCase();
+  return (
+    normalized === "localhost" ||
+    normalized === "127.0.0.1" ||
+    normalized === "::1" ||
+    normalized === "[::1]" ||
+    normalized.endsWith(".localhost")
+  );
+}
+
+function extractFirstNonLocalhostUrl(output) {
+  const { URL } = require("node:url");
+  const matches = stripAnsi(output).match(URL_CANDIDATE_REGEX);
+  if (!matches) return null;
+
+  for (const match of matches) {
+    try {
+      const parsedUrl = new URL(match.trim().replace(/[),.;!?]+$/, ""));
+      if (!isLocalhostHostname(parsedUrl.hostname)) {
+        return parsedUrl.toString();
+      }
+    } catch {
+      // Ignore invalid URL candidates.
+    }
+  }
+
+  return null;
+}
+
+// ── CLI / path helpers ──
+
+function resolveCliFromPath(command, shellEnv) {
+  // Validate command: only allow valid binary names (alphanumeric, hyphens, underscores, dots)
+  if (!command || !/^[a-zA-Z0-9._-]+$/.test(command)) {
+    return null;
+  }
+
+  if (shellEnv) {
+    try {
+      const whichCmd = process.platform === "win32" ? "where" : "which";
+      const resolved = execFileSync(whichCmd, [command], {
+        encoding: "utf8",
+        timeout: 3000,
+        stdio: ["pipe", "pipe", "pipe"],
+        env: shellEnv,
+      }).trim().split("\n")[0].trim();
+      if (resolved && existsSync(resolved)) return resolved;
+    } catch {
+      // Not found on PATH
+    }
+  }
+  return null;
+}
+
+function toUnpackedAsarPath(filePath) {
+  const unpackedPath = filePath.replace(/app\.asar([\\/])/, "app.asar.unpacked$1");
+  if (unpackedPath !== filePath && existsSync(unpackedPath)) {
+    return unpackedPath;
+  }
+  return filePath;
+}
+
+// ── Shell environment (cached) ──
+
+let _cachedShellEnv = null;
+
+async function getShellEnv() {
+  if (_cachedShellEnv) return _cachedShellEnv;
+
+  const home = process.env.HOME || "";
+  const extraPaths = [
+    `${home}/.local/bin`,
+    `${home}/.npm-global/bin`,
+    "/usr/local/bin",
+    "/opt/homebrew/bin",
+  ];
+
+  if (process.platform === "win32") {
+    _cachedShellEnv = {
+      ...process.env,
+      PATH: [...extraPaths, process.env.PATH || ""].join(path.delimiter),
+    };
+    return _cachedShellEnv;
+  }
+
+  // On macOS/Linux, spawn a login shell to capture the real environment.
+  try {
+    const shell = process.env.SHELL || "/bin/zsh";
+    const envOutput = execFileSync(shell, ['-ilc', 'env'], {
+      encoding: "utf8",
+      timeout: 10000,
+      stdio: ["pipe", "pipe", "pipe"],
+      env: { ...process.env, HOME: home },
+    });
+    const envMap = {};
+    for (const line of envOutput.split("\n")) {
+      const idx = line.indexOf("=");
+      if (idx > 0) {
+        envMap[line.slice(0, idx)] = line.slice(idx + 1);
+      }
+    }
+    const shellPath = envMap.PATH || "";
+    _cachedShellEnv = {
+      ...envMap,
+      ...process.env,
+      PATH: [...extraPaths, shellPath, process.env.PATH || ""].join(path.delimiter),
+    };
+  } catch {
+    _cachedShellEnv = {
+      ...process.env,
+      PATH: [...extraPaths, process.env.PATH || ""].join(path.delimiter),
+    };
+  }
+  return _cachedShellEnv;
+}
+
+// ── Stream chunk serialization ──
+
+function serializeStreamChunk(chunk) {
+  if (!chunk || !chunk.type) return null;
+  switch (chunk.type) {
+    case "text-delta":
+      return { type: "text-delta", textDelta: chunk.text ?? chunk.textDelta ?? "" };
+    case "reasoning-delta":
+      return { type: "reasoning-delta", delta: chunk.text ?? chunk.delta ?? "" };
+    case "reasoning-start":
+      return { type: "reasoning-start", id: chunk.id ?? undefined };
+    case "reasoning-end":
+      return { type: "reasoning-end", id: chunk.id ?? undefined };
+    case "tool-call":
+      return {
+        type: "tool-call",
+        toolCallId: chunk.toolCallId,
+        toolName: chunk.toolName,
+        args: chunk.args,
+      };
+    case "tool-result":
+      return {
+        type: "tool-result",
+        toolCallId: chunk.toolCallId,
+        toolName: chunk.toolName,
+        result: chunk.result,
+        output: chunk.output,
+      };
+    case "error":
+      return { type: "error", error: chunk.error };
+    default:
+      try {
+        return JSON.parse(JSON.stringify(chunk));
+      } catch {
+        return { type: chunk.type };
+      }
+  }
+}
+
+module.exports = {
+  stripAnsi,
+  isLocalhostHostname,
+  extractFirstNonLocalhostUrl,
+  resolveCliFromPath,
+  toUnpackedAsarPath,
+  getShellEnv,
+  serializeStreamChunk,
+};

electron/bridges/autoUpdateBridge.cjs

@@ -12,6 +12,40 @@
 
 let _deps = null;
 
+/**
+ * Read the persisted auto-update preference from a JSON file in userData.
+ * Returns true (default) if the file doesn't exist or is unreadable.
+ */
+function readAutoUpdatePreference() {
+  try {
+    const { app } = _deps?.electronModule || {};
+    if (!app) return true;
+    const path = require('path');
+    const fs = require('fs');
+    const prefPath = path.join(app.getPath('userData'), 'auto-update-pref.json');
+    const data = JSON.parse(fs.readFileSync(prefPath, 'utf8'));
+    return data.enabled !== false;
+  } catch {
+    return true; // default to enabled
+  }
+}
+
+/**
+ * Persist the auto-update preference to a JSON file in userData.
+ */
+function writeAutoUpdatePreference(enabled) {
+  try {
+    const { app } = _deps?.electronModule || {};
+    if (!app) return;
+    const path = require('path');
+    const fs = require('fs');
+    const prefPath = path.join(app.getPath('userData'), 'auto-update-pref.json');
+    fs.writeFileSync(prefPath, JSON.stringify({ enabled }), 'utf8');
+  } catch (err) {
+    console.warn('[AutoUpdate] Failed to write preference:', err?.message || err);
+  }
+}
+
 /**
  * Returns true when the current packaging format supports electron-updater
  * (macOS zip/dmg, Windows NSIS, Linux AppImage).
@@ -51,7 +85,7 @@ function getAutoUpdater() {
   if (_autoUpdater) return _autoUpdater;
   try {
     const { autoUpdater } = require("electron-updater");
-    autoUpdater.autoDownload = true;
+    autoUpdater.autoDownload = readAutoUpdatePreference();
     autoUpdater.autoInstallOnAppQuit = false;
     // Silence the default electron-log transport (we log ourselves).
     autoUpdater.logger = null;
@@ -84,9 +118,12 @@ function setupGlobalListeners() {
 
   updater.on("update-available", (info) => {
     _isChecking = false;
-    // autoDownload=true means the download begins immediately after this event
-    _isDownloading = true;
-    _lastStatus = { status: 'downloading', percent: 0, error: null, version: info.version || null, isChecking: false };
+    // Only track as downloading when autoDownload is enabled — otherwise no
+    // download will actually start and the status would be stuck at 0%.
+    // Use 'available' so late-opening windows can still hydrate the version.
+    const willDownload = updater.autoDownload !== false;
+    _isDownloading = willDownload;
+    _lastStatus = { status: willDownload ? 'downloading' : 'available', percent: 0, error: null, version: info.version || null, isChecking: false };
     broadcastToAllWindows("netcatty:update:update-available", {
       version: info.version || "",
       releaseNotes: typeof info.releaseNotes === "string" ? info.releaseNotes : "",
@@ -144,6 +181,9 @@ function startAutoCheck(delayMs = 5000) {
     console.log("[AutoUpdate] Platform does not support auto-update, skipping auto-check");
     return;
   }
+  // Cancel any existing timer to avoid duplicate concurrent checks
+  // (e.g. from multiple windows initializing or re-enable toggle).
+  cancelAutoCheck();
   _autoCheckTimer = setTimeout(async () => {
     _autoCheckTimer = null;
     const updater = getAutoUpdater();
@@ -151,6 +191,12 @@ function startAutoCheck(delayMs = 5000) {
       console.warn("[AutoUpdate] Auto-check skipped — updater not available");
       return;
     }
+    // Respect autoDownload flag — the renderer may have disabled it via IPC
+    // before this timer fires.
+    if (updater.autoDownload === false) {
+      console.log("[AutoUpdate] Auto-check skipped — autoDownload is disabled");
+      return;
+    }
     _isChecking = true;
     _lastStatus = { ..._lastStatus, isChecking: true };
     try {
@@ -302,9 +348,49 @@ function registerHandlers(ipcMain) {
   ipcMain.handle("netcatty:update:install", () => {
     const updater = getAutoUpdater();
     if (!updater) return;
+
+    // On macOS, the system tray keeps the app process alive even after all
+    // windows are closed, which prevents quitAndInstall from completing.
+    // Destroy the tray (and its panel window) before quitting so the app
+    // can exit cleanly and the installer can proceed.
+    try {
+      const globalShortcutBridge = require("./globalShortcutBridge.cjs");
+      globalShortcutBridge.cleanup();
+    } catch {
+      // ignore — bridge may not be available
+    }
+
     updater.quitAndInstall(false, true);
   });
 
+  // ---- Get auto-update preference -----------------------------------------
+  ipcMain.handle("netcatty:update:getAutoUpdate", () => {
+    return { enabled: readAutoUpdatePreference() };
+  });
+
+  // ---- Enable/disable auto-update ----------------------------------------
+  let _prevAutoDownloadEnabled = readAutoUpdatePreference();
+  ipcMain.handle("netcatty:update:setAutoUpdate", (_event, { enabled }) => {
+    const wasEnabled = _prevAutoDownloadEnabled;
+    _prevAutoDownloadEnabled = !!enabled;
+    const updater = getAutoUpdater();
+    if (updater) {
+      updater.autoDownload = !!enabled;
+      console.log("[AutoUpdate] autoDownload set to:", !!enabled);
+    }
+    // Persist so the preference survives app restarts
+    writeAutoUpdatePreference(!!enabled);
+    if (!enabled) {
+      cancelAutoCheck();
+    } else if (!wasEnabled && !_isChecking) {
+      // Only re-schedule when actually re-enabling (not on every mount sync),
+      // to avoid duplicate checks from multiple windows initializing.
+      // Skip if a check is already in flight to prevent concurrent calls.
+      startAutoCheck(2000);
+    }
+    return { success: true };
+  });
+
   console.log("[AutoUpdate] Handlers registered");
 }
 

electron/bridges/cloudSyncBridge.cjs

@@ -1,4 +1,5 @@
 const { createClient, AuthType } = require("webdav");
+const https = require("https");
 const {
   S3Client,
   HeadObjectCommand,
@@ -50,6 +51,10 @@ const buildError = (message, details) => {
 const buildWebdavClient = (config) => {
   if (!config) throw new Error("Missing WebDAV config");
   const endpoint = normalizeEndpoint(config.endpoint);
+  const extraOpts = {};
+  if (config.allowInsecure) {
+    extraOpts.httpsAgent = new https.Agent({ rejectUnauthorized: false });
+  }
   if (config.authType === "token") {
     return createClient(endpoint, {
       authType: AuthType.Token,
@@ -57,6 +62,7 @@ const buildWebdavClient = (config) => {
         access_token: config.token || "",
         token_type: "Bearer",
       },
+      ...extraOpts,
     });
   }
   if (config.authType === "digest") {
@@ -64,12 +70,14 @@ const buildWebdavClient = (config) => {
       authType: AuthType.Digest,
       username: config.username || "",
       password: config.password || "",
+      ...extraOpts,
     });
   }
   return createClient(endpoint, {
     authType: AuthType.Password,
     username: config.username || "",
     password: config.password || "",
+    ...extraOpts,
   });
 };
 

electron/bridges/mcpServerBridge.cjs

@@ -0,0 +1,813 @@
+/**
+ * MCP Server Bridge — TCP host in Electron main process
+ *
+ * Starts a local TCP server that the netcatty-mcp-server.cjs child process
+ * connects to. Handles JSON-RPC calls by dispatching to real SSH sessions
+ * and SFTP clients.
+ */
+"use strict";
+
+const net = require("node:net");
+const crypto = require("node:crypto");
+const path = require("node:path");
+const { existsSync } = require("node:fs");
+
+const { toUnpackedAsarPath } = require("./ai/shellUtils.cjs");
+const { execViaPty, execViaChannel } = require("./ai/ptyExec.cjs");
+
+let sessions = null;   // Map<sessionId, { sshClient, stream, pty, conn, ... }>
+let sftpClients = null; // Map<sftpId, SFTPWrapper>
+let tcpServer = null;
+let tcpPort = null;
+let authToken = null;  // Random token generated when TCP server starts
+
+// Track which sockets have completed authentication
+const authenticatedSockets = new WeakSet();
+
+/**
+ * Safely quote a string for use in a POSIX shell command.
+ * Wraps the value in single quotes and escapes any embedded single quotes.
+ */
+function shellQuote(s) {
+  return "'" + s.replace(/'/g, "'\\''") + "'";
+}
+
+// Per-scope metadata: chatSessionId → { sessionIds: string[], metadata: Map<sessionId, meta> }
+// Each chat session only sees the hosts registered for its scope.
+const scopedMetadata = new Map();
+
+// Fallback: last-registered scope (used when no chatSessionId is provided)
+let fallbackScopedSessionIds = [];
+
+// Command safety checking (reuse from aiBridge)
+let commandBlocklist = [];
+// Cached compiled RegExp objects for commandBlocklist (rebuilt when blocklist changes)
+let compiledBlocklist = [];
+
+// Command timeout in milliseconds (default 60s, synced from user settings)
+let commandTimeoutMs = 60000;
+
+// Max iterations for AI agent loops (default 20, synced from user settings)
+let maxIterations = 20;
+
+// Permission mode: 'observer' | 'confirm' | 'autonomous' (synced from user settings)
+let permissionMode = "confirm";
+
+// Track active PTY executions for cancellation
+const activePtyExecs = new Map(); // marker → { ptyStream, cleanup }
+
+function cancelAllPtyExecs() {
+  for (const [marker, entry] of activePtyExecs) {
+    try {
+      entry.cleanup();
+      // Send Ctrl+C to kill the running command
+      if (entry.ptyStream && typeof entry.ptyStream.write === "function") {
+        entry.ptyStream.write("\x03");
+      }
+    } catch { /* ignore */ }
+  }
+  activePtyExecs.clear();
+}
+
+function init(deps) {
+  sessions = deps.sessions;
+  sftpClients = deps.sftpClients;
+  if (deps.commandBlocklist) {
+    commandBlocklist = deps.commandBlocklist;
+  }
+}
+
+function setCommandBlocklist(list) {
+  commandBlocklist = list || [];
+  // Recompile cached regexes when blocklist changes
+  compiledBlocklist = [];
+  for (const pattern of commandBlocklist) {
+    try {
+      compiledBlocklist.push(new RegExp(pattern, "i"));
+    } catch {
+      compiledBlocklist.push(null); // placeholder for invalid patterns
+    }
+  }
+}
+
+function setCommandTimeout(seconds) {
+  commandTimeoutMs = Math.max(1, Math.min(3600, seconds || 60)) * 1000;
+}
+
+function getCommandTimeoutMs() {
+  return commandTimeoutMs;
+}
+
+function setMaxIterations(value) {
+  maxIterations = Math.max(1, Math.min(100, value || 20));
+}
+
+function getMaxIterations() {
+  return maxIterations;
+}
+
+function setPermissionMode(mode) {
+  if (mode === "observer" || mode === "confirm" || mode === "autonomous") {
+    permissionMode = mode;
+  }
+}
+
+function getPermissionMode() {
+  return permissionMode;
+}
+
+/**
+ * Register metadata for terminal sessions (called from renderer via IPC).
+ * Metadata is stored per-scope (chatSessionId) so different AI chat sessions
+ * only see their own hosts.
+ * @param {Array<{sessionId, hostname, label, os, username, connected}>} sessionList
+ * @param {string} [chatSessionId] - AI chat session ID for per-scope isolation
+ */
+function updateSessionMetadata(sessionList, chatSessionId) {
+  const ids = sessionList.map(s => s.sessionId);
+  const metaMap = new Map();
+  for (const s of sessionList) {
+    metaMap.set(s.sessionId, {
+      hostname: s.hostname || "",
+      label: s.label || "",
+      os: s.os || "",
+      username: s.username || "",
+      connected: s.connected !== false,
+    });
+  }
+
+  // Store per-scope metadata when chatSessionId is provided
+  if (chatSessionId) {
+    scopedMetadata.set(chatSessionId, { sessionIds: ids, metadata: metaMap });
+  } else {
+    // Only update fallback when no chatSessionId — prevents scoped updates from
+    // leaking all sessions to unscoped agents
+    fallbackScopedSessionIds = ids.slice();
+  }
+}
+
+/**
+ * Get scoped session IDs. If chatSessionId is provided, returns IDs for that
+ * specific scope; otherwise returns the last-registered fallback.
+ */
+function getScopedSessionIds(chatSessionId) {
+  if (chatSessionId) {
+    const scoped = scopedMetadata.get(chatSessionId);
+    if (scoped) return scoped.sessionIds;
+  }
+  return fallbackScopedSessionIds;
+}
+
+/**
+ * Look up metadata for a sessionId, scoped to a specific chat session.
+ * Falls back to session object properties if no scoped metadata is found.
+ */
+function getSessionMeta(sessionId, chatSessionId) {
+  // Try scoped metadata first
+  if (chatSessionId) {
+    const scoped = scopedMetadata.get(chatSessionId);
+    if (scoped?.metadata?.has(sessionId)) return scoped.metadata.get(sessionId);
+  }
+  // Fallback: check all scopes for this sessionId (backwards compat)
+  for (const [, scope] of scopedMetadata) {
+    if (scope.metadata?.has(sessionId)) return scope.metadata.get(sessionId);
+  }
+  return null;
+}
+
+/**
+ * Run an array of async task factories with a concurrency limit.
+ */
+async function limitConcurrency(tasks, limit) {
+  const results = [];
+  const executing = new Set();
+  for (let i = 0; i < tasks.length; i++) {
+    const task = tasks[i];
+    const p = task().then(r => { results[i] = r; }).finally(() => executing.delete(p));
+    executing.add(p);
+    if (executing.size >= limit) {
+      await Promise.race(executing);
+    }
+  }
+  await Promise.all(executing);
+  return results;
+}
+
+function checkCommandSafety(command) {
+  for (let i = 0; i < compiledBlocklist.length; i++) {
+    const re = compiledBlocklist[i];
+    if (re && re.test(command)) {
+      return { blocked: true, matchedPattern: commandBlocklist[i] };
+    }
+  }
+  return { blocked: false };
+}
+
+// ── TCP Server ──
+
+function getOrCreateHost() {
+  if (tcpServer && tcpPort) return Promise.resolve(tcpPort);
+
+  // Generate a random auth token for this server instance
+  authToken = crypto.randomBytes(32).toString("hex");
+
+  return new Promise((resolve, reject) => {
+    const server = net.createServer((socket) => {
+      handleConnection(socket);
+    });
+
+    server.listen(0, "127.0.0.1", () => {
+      tcpPort = server.address().port;
+      tcpServer = server;
+      resolve(tcpPort);
+    });
+
+    server.on("error", (err) => {
+      console.error("[MCP Bridge] TCP server error:", err.message);
+      reject(err);
+    });
+  });
+}
+
+const MAX_TCP_BUFFER = 10 * 1024 * 1024; // 10MB
+
+function handleConnection(socket) {
+  let buffer = "";
+  socket.setEncoding("utf-8");
+
+  socket.on("data", (chunk) => {
+    if (buffer.length + chunk.length > MAX_TCP_BUFFER) {
+      console.error("[MCP Bridge] TCP buffer exceeded max size, dropping connection");
+      socket.destroy();
+      return;
+    }
+    buffer += chunk;
+    let newlineIdx;
+    while ((newlineIdx = buffer.indexOf("\n")) !== -1) {
+      const line = buffer.slice(0, newlineIdx);
+      buffer = buffer.slice(newlineIdx + 1);
+      if (!line.trim()) continue;
+      handleMessage(socket, line);
+    }
+  });
+
+  socket.on("error", () => {
+    // Client disconnected — nothing to do
+  });
+}
+
+async function handleMessage(socket, line) {
+  let msg;
+  try {
+    msg = JSON.parse(line);
+  } catch {
+    return;
+  }
+
+  const { id, method, params } = msg;
+  if (id == null || !method) return;
+
+  // ── Authentication gate ──
+  // The first message from any connection MUST be auth/verify with the correct token.
+  // All other methods are rejected until the socket is authenticated.
+  if (!authenticatedSockets.has(socket)) {
+    if (method === "auth/verify" && params?.token === authToken) {
+      authenticatedSockets.add(socket);
+      const response = JSON.stringify({ jsonrpc: "2.0", id, result: { ok: true } }) + "\n";
+      if (!socket.destroyed) socket.write(response);
+      return;
+    }
+    // Wrong token or wrong method — reject and close
+    const response = JSON.stringify({
+      jsonrpc: "2.0",
+      id,
+      error: { code: -32001, message: "Authentication required. Send auth/verify with valid token first." },
+    }) + "\n";
+    if (!socket.destroyed) {
+      socket.write(response);
+      socket.destroy();
+    }
+    return;
+  }
+
+  try {
+    const result = await dispatch(method, params || {});
+    const response = JSON.stringify({ jsonrpc: "2.0", id, result }) + "\n";
+    if (!socket.destroyed) socket.write(response);
+  } catch (err) {
+    const response = JSON.stringify({
+      jsonrpc: "2.0",
+      id,
+      error: { code: -32000, message: err?.message || String(err) },
+    }) + "\n";
+    if (!socket.destroyed) socket.write(response);
+  }
+}
+
+// ── RPC Dispatch ──
+
+// Methods that modify remote state — blocked in observer mode
+const WRITE_METHODS = new Set([
+  "netcatty/exec",
+  "netcatty/terminalWrite",
+  "netcatty/sftpWrite",
+  "netcatty/sftpMkdir",
+  "netcatty/sftpRemove",
+  "netcatty/sftpRename",
+  "netcatty/multiExec",
+]);
+
+/**
+ * Validate that a sessionId is allowed in the current scope.
+ * Checks both process-level SCOPED_SESSION_IDS and per-chatSession scoped metadata.
+ */
+function validateSessionScope(sessionId, chatSessionId) {
+  if (!sessionId) return null; // will fail at handler level
+  const scopedIds = getScopedSessionIds(chatSessionId);
+  if (scopedIds && scopedIds.length > 0 && !scopedIds.includes(sessionId)) {
+    return `Session "${sessionId}" is not in the current scope.`;
+  }
+  return null;
+}
+
+async function dispatch(method, params) {
+  // Observer mode: block all write operations
+  if (permissionMode === "observer" && WRITE_METHODS.has(method)) {
+    return { ok: false, error: `Operation denied: permission mode is "observer" (read-only). Change to "confirm" or "autonomous" in Settings → AI → Safety to allow this action.` };
+  }
+
+  // Scope validation for session-targeted operations
+  if (method !== "netcatty/getContext" && params?.sessionId) {
+    const scopeErr = validateSessionScope(params.sessionId, params?.chatSessionId);
+    if (scopeErr) return { ok: false, error: scopeErr };
+  }
+  // For multi-exec, validate all session IDs
+  if (method === "netcatty/multiExec" && Array.isArray(params?.sessionIds)) {
+    for (const sid of params.sessionIds) {
+      const scopeErr = validateSessionScope(sid, params?.chatSessionId);
+      if (scopeErr) return { ok: false, error: scopeErr };
+    }
+  }
+
+  switch (method) {
+    case "netcatty/getContext":
+      return handleGetContext(params);
+    case "netcatty/exec":
+      return handleExec(params);
+    case "netcatty/terminalWrite":
+      return handleTerminalWrite(params);
+    case "netcatty/sftpList":
+      return handleSftpList(params);
+    case "netcatty/sftpRead":
+      return handleSftpRead(params);
+    case "netcatty/sftpWrite":
+      return handleSftpWrite(params);
+    case "netcatty/sftpMkdir":
+      return handleSftpMkdir(params);
+    case "netcatty/sftpRemove":
+      return handleSftpRemove(params);
+    case "netcatty/sftpRename":
+      return handleSftpRename(params);
+    case "netcatty/sftpStat":
+      return handleSftpStat(params);
+    case "netcatty/multiExec":
+      return handleMultiExec(params);
+    default:
+      throw new Error(`Unknown method: ${method}`);
+  }
+}
+
+// ── Handler: getContext ──
+
+function handleGetContext(params) {
+  if (!sessions) return { hosts: [], instructions: "No sessions available." };
+
+  // Scope resolution: use explicit scopedSessionIds from MCP server env var (per-process, set at spawn).
+  // If scopedSessionIds is provided but empty, that means "no access" (not "all access").
+  // Only fall back to unscoped (show all) when scopedSessionIds is not provided at all.
+  const hasScopeParam = params?.scopedSessionIds != null;
+  const scopedIds = hasScopeParam
+    ? new Set(params.scopedSessionIds)
+    : null;
+
+  // chatSessionId may be passed via env for per-scope metadata lookup
+  const chatSessionId = params?.chatSessionId || null;
+
+  const hosts = [];
+  // When scope param is provided (even if empty Set), enforce it strictly
+  if (hasScopeParam && scopedIds.size === 0) {
+    return {
+      environment: "netcatty-terminal",
+      description: "No hosts are available in the current scope.",
+      hosts: [],
+      hostCount: 0,
+    };
+  }
+  for (const [sessionId, session] of sessions.entries()) {
+    if (scopedIds && !scopedIds.has(sessionId)) continue;
+    // Only include SSH sessions (skip local terminal sessions)
+    const sshClient = session.conn || session.sshClient;
+    if (!sshClient || typeof sshClient.exec !== "function") continue;
+
+    // Look up metadata scoped to this chat session
+    const meta = getSessionMeta(sessionId, chatSessionId) || {};
+    hosts.push({
+      sessionId,
+      hostname: meta.hostname || session.hostname || "",
+      label: meta.label || session.label || "",
+      os: meta.os || "",
+      username: meta.username || session.username || "",
+      connected: meta.connected !== undefined ? meta.connected : !!(session.sshClient || session.conn),
+    });
+  }
+
+  return {
+    environment: "netcatty-terminal",
+    description: "You are operating inside Netcatty, a multi-host SSH terminal manager. " +
+      "The user is managing remote servers. Use the provided tools to execute commands, " +
+      "read/write files, and manage hosts on the remote machines. " +
+      "Always prefer these tools over suggesting the user to do things manually.",
+    hosts,
+    hostCount: hosts.length,
+  };
+}
+
+// ── Handler: exec ──
+
+function handleExec(params) {
+  const { sessionId, command } = params;
+  if (!sessionId || !command) throw new Error("sessionId and command are required");
+  if (typeof command !== 'string' || !command.trim()) {
+    return { ok: false, error: 'Invalid command', exitCode: 1 };
+  }
+
+  const safety = checkCommandSafety(command);
+  if (safety.blocked) {
+    return { ok: false, error: `Command blocked by safety policy. Pattern: ${safety.matchedPattern}` };
+  }
+
+  const session = sessions?.get(sessionId);
+  if (!session) return { ok: false, error: "Session not found" };
+
+  const sshClient = session.conn || session.sshClient;
+  if (!sshClient || typeof sshClient.exec !== "function") {
+    return { ok: false, error: "Not an SSH session" };
+  }
+
+  const ptyStream = session.stream;
+
+  // If no PTY stream, fall back to exec channel (invisible to terminal)
+  if (!ptyStream || typeof ptyStream.write !== "function") {
+    return execViaChannel(sshClient, command, { timeoutMs: commandTimeoutMs });
+  }
+
+  // Execute via PTY stream so user sees the command in the terminal
+  return execViaPty(ptyStream, command, {
+    trackForCancellation: activePtyExecs,
+    timeoutMs: commandTimeoutMs,
+  });
+}
+
+// ── Handler: terminalWrite ──
+
+function handleTerminalWrite(params) {
+  const { sessionId, input } = params;
+  if (!sessionId || input == null) throw new Error("sessionId and input are required");
+
+  // Validate input against command blocklist
+  const safety = checkCommandSafety(input);
+  if (safety.blocked) {
+    return { ok: false, error: `Input blocked by safety policy. Pattern: ${safety.matchedPattern}` };
+  }
+
+  const session = sessions?.get(sessionId);
+  if (!session) return { ok: false, error: "Session not found" };
+
+  if (session.stream) {
+    session.stream.write(input);
+    return { ok: true };
+  }
+  if (session.pty) {
+    session.pty.write(input);
+    return { ok: true };
+  }
+  return { ok: false, error: "No writable stream" };
+}
+
+// ── SFTP Helpers ──
+
+function findSftpForSession(sessionId) {
+  // Try to find an SFTP client keyed by the same sessionId
+  if (sftpClients?.has(sessionId)) {
+    return sftpClients.get(sessionId);
+  }
+  // Look through all SFTP clients for one sharing the same SSH connection
+  const session = sessions?.get(sessionId);
+  if (!session?.sshClient) return null;
+
+  for (const [, client] of sftpClients || []) {
+    if (client.client === session.sshClient || client._sshClient === session.sshClient) {
+      return client;
+    }
+  }
+  return null;
+}
+
+// ── Handler: sftpList ──
+
+async function handleSftpList(params) {
+  const { sessionId, path: dirPath } = params;
+  if (!sessionId || !dirPath) throw new Error("sessionId and path are required");
+
+  const sftpClient = findSftpForSession(sessionId);
+  if (sftpClient) {
+    try {
+      const list = await sftpClient.list(dirPath);
+      return {
+        files: list.map(f => ({
+          name: f.name,
+          type: f.type === "d" ? "directory" : f.type === "l" ? "symlink" : "file",
+          size: f.size,
+          lastModified: f.modifyTime,
+          permissions: f.rights ? `${f.rights.user}${f.rights.group}${f.rights.other}` : undefined,
+        })),
+      };
+    } catch (err) {
+      return { ok: false, error: err.message };
+    }
+  }
+
+  // Fallback: use SSH exec
+  const result = await handleExec({ sessionId, command: `ls -la ${shellQuote(dirPath)}` });
+  if (!result.ok) return { ok: false, error: result.error };
+  return { output: result.stdout || "(empty directory)" };
+}
+
+// ── Handler: sftpRead ──
+
+async function handleSftpRead(params) {
+  const { sessionId, path: filePath } = params;
+  if (params.maxBytes != null && (typeof params.maxBytes !== 'number' || params.maxBytes < 1 || params.maxBytes > 10 * 1024 * 1024)) {
+    return { ok: false, error: 'maxBytes must be a positive number between 1 and 10485760' };
+  }
+  // Clamp maxBytes to a safe upper bound (10MB)
+  const maxBytes = Math.max(1, Math.min(Number(params.maxBytes) || 10000, 10 * 1024 * 1024));
+  if (!sessionId || !filePath) throw new Error("sessionId and path are required");
+
+  // Fallback to SSH exec (more reliable across SFTP client states)
+  const result = await handleExec({ sessionId, command: `head -c ${maxBytes} ${shellQuote(filePath)}` });
+  if (!result.ok) return { ok: false, error: result.error };
+  return { content: result.stdout || "(empty file)" };
+}
+
+// ── Handler: sftpWrite ──
+
+async function handleSftpWrite(params) {
+  const { sessionId, path: filePath, content } = params;
+  if (!sessionId || !filePath || content == null) throw new Error("sessionId, path and content are required");
+
+  const sftpClient = findSftpForSession(sessionId);
+  if (sftpClient) {
+    try {
+      await sftpClient.put(Buffer.from(content, "utf-8"), filePath);
+      return { written: filePath };
+    } catch {
+      // Fallback to SSH
+    }
+  }
+
+  // Use base64 encoding to avoid heredoc delimiter collision issues
+  const b64 = Buffer.from(content, "utf-8").toString("base64");
+  const result = await handleExec({ sessionId, command: `echo ${shellQuote(b64)} | base64 -d > ${shellQuote(filePath)}` });
+  if (!result.ok) return { ok: false, error: result.error };
+  return { written: filePath };
+}
+
+// ── Handler: sftpMkdir ──
+
+async function handleSftpMkdir(params) {
+  const { sessionId, path: dirPath } = params;
+  if (!sessionId || !dirPath) throw new Error("sessionId and path are required");
+
+  const sftpClient = findSftpForSession(sessionId);
+  if (sftpClient) {
+    try {
+      await sftpClient.mkdir(dirPath, true); // recursive
+      return { created: dirPath };
+    } catch {
+      // Fallback
+    }
+  }
+
+  const result = await handleExec({ sessionId, command: `mkdir -p ${shellQuote(dirPath)}` });
+  if (!result.ok) return { ok: false, error: result.error };
+  return { created: dirPath };
+}
+
+// ── Handler: sftpRemove ──
+
+// Critical paths that must never be removed (module-level constant)
+const CRITICAL_PATHS = new Set([
+  "/", "/root", "/home", "/etc", "/var", "/usr", "/boot",
+  "/bin", "/sbin", "/lib", "/lib64", "/dev", "/proc", "/sys", "/tmp", "/opt",
+]);
+
+async function handleSftpRemove(params) {
+  const { sessionId, path: targetPath } = params;
+  if (!sessionId || !targetPath) throw new Error("sessionId and path are required");
+
+  // Guard against deleting root or critical system directories
+  // Normalize to resolve "..", "//", and trailing slashes before checking
+  const normalizedPath = path.posix.normalize(targetPath).replace(/\/+$/, "") || "/";
+  if (CRITICAL_PATHS.has(normalizedPath) || /^\/[^/]+$/.test(normalizedPath)) {
+    return { ok: false, error: `Refusing to remove critical or root-level path: ${targetPath}` };
+  }
+
+  // Use rm -r (without -f) so permission errors surface instead of being silently ignored
+  const result = await handleExec({ sessionId, command: `rm -r ${shellQuote(targetPath)}` });
+  if (!result.ok) return { ok: false, error: result.error };
+  return { removed: targetPath };
+}
+
+// ── Handler: sftpRename ──
+
+async function handleSftpRename(params) {
+  const { sessionId, oldPath, newPath } = params;
+  if (!sessionId || !oldPath || !newPath) throw new Error("sessionId, oldPath and newPath are required");
+
+  const sftpClient = findSftpForSession(sessionId);
+  if (sftpClient) {
+    try {
+      await sftpClient.rename(oldPath, newPath);
+      return { renamed: `${oldPath} → ${newPath}` };
+    } catch {
+      // Fallback
+    }
+  }
+
+  const result = await handleExec({ sessionId, command: `mv ${shellQuote(oldPath)} ${shellQuote(newPath)}` });
+  if (!result.ok) return { ok: false, error: result.error };
+  return { renamed: `${oldPath} → ${newPath}` };
+}
+
+// ── Handler: sftpStat ──
+
+async function handleSftpStat(params) {
+  const { sessionId, path: targetPath } = params;
+  if (!sessionId || !targetPath) throw new Error("sessionId and path are required");
+
+  const sftpClient = findSftpForSession(sessionId);
+  if (sftpClient) {
+    try {
+      const stat = await sftpClient.stat(targetPath);
+      return {
+        name: path.basename(targetPath),
+        type: stat.isDirectory ? "directory" : stat.isSymbolicLink ? "symlink" : "file",
+        size: stat.size,
+        lastModified: stat.modifyTime,
+        permissions: stat.mode ? (stat.mode & 0o777).toString(8) : undefined,
+      };
+    } catch {
+      // Fallback
+    }
+  }
+
+  // Fallback: use stat command
+  const result = await handleExec({ sessionId, command: `stat -c '{"size":%s,"mode":"%a","mtime":%Y,"type":"%F"}' ${shellQuote(targetPath)}` });
+  if (!result.ok) return { ok: false, error: result.error };
+  try {
+    const parsed = JSON.parse(result.stdout.trim());
+    return {
+      name: path.basename(targetPath),
+      type: parsed.type?.includes("directory") ? "directory" : "file",
+      size: parsed.size,
+      lastModified: parsed.mtime * 1000,
+      permissions: parsed.mode,
+    };
+  } catch {
+    return { ok: false, error: "Failed to parse stat output" };
+  }
+}
+
+// ── Handler: multiExec ──
+
+async function handleMultiExec(params) {
+  const { sessionIds, command, mode = "parallel", stopOnError = false } = params;
+  if (!Array.isArray(sessionIds) || !command) throw new Error("sessionIds and command are required");
+  if (sessionIds.length > 50) {
+    return { ok: false, error: 'Too many session IDs: maximum is 50' };
+  }
+  if (typeof command !== 'string' || !command.trim()) {
+    return { ok: false, error: 'Invalid command' };
+  }
+
+  const safety = checkCommandSafety(command);
+  if (safety.blocked) {
+    return { ok: false, error: `Command blocked by safety policy. Pattern: ${safety.matchedPattern}` };
+  }
+
+  const results = {};
+
+  if (mode === "sequential") {
+    for (const sid of sessionIds) {
+      const result = await handleExec({ sessionId: sid, command });
+      results[sid] = {
+        ok: result.ok,
+        output: result.ok ? (result.stdout || "(no output)") : `Error: ${result.error || result.stderr || "Failed"}`,
+      };
+      if (!result.ok && stopOnError) break;
+    }
+  } else {
+    // Parallel execution with concurrency limit
+    const tasks = sessionIds.map((sid) => () => {
+      return handleExec({ sessionId: sid, command }).then(result => ({
+        sid,
+        ok: result.ok,
+        output: result.ok ? (result.stdout || "(no output)") : `Error: ${result.error || result.stderr || "Failed"}`,
+      }));
+    });
+    const resolved = await limitConcurrency(tasks, 10);
+    for (const r of resolved) {
+      results[r.sid] = { ok: r.ok, output: r.output };
+    }
+  }
+
+  return { results };
+}
+
+// ── MCP Server Config Builder ──
+
+function buildMcpServerConfig(port, scopedSessionIds, chatSessionId) {
+  // Use provided scoped IDs, or resolve from chatSessionId, or fall back
+  const effectiveIds = (scopedSessionIds && scopedSessionIds.length > 0)
+    ? scopedSessionIds
+    : getScopedSessionIds(chatSessionId);
+
+  const runtimePath = toUnpackedAsarPath(
+    path.join(__dirname, "..", "mcp", "netcatty-mcp-server.cjs"),
+  );
+
+  const env = [
+    { name: "NETCATTY_MCP_PORT", value: String(port) },
+  ];
+
+  if (authToken) {
+    env.push({ name: "NETCATTY_MCP_TOKEN", value: authToken });
+  }
+
+  if (effectiveIds && effectiveIds.length > 0) {
+    env.push({ name: "NETCATTY_MCP_SESSION_IDS", value: effectiveIds.join(",") });
+  }
+
+  // Pass chatSessionId so MCP server can scope getContext responses
+  if (chatSessionId) {
+    env.push({ name: "NETCATTY_MCP_CHAT_SESSION_ID", value: chatSessionId });
+  }
+
+  // Pass permission mode so MCP server can enforce it locally (defense-in-depth)
+  env.push({ name: "NETCATTY_MCP_PERMISSION_MODE", value: permissionMode });
+
+  return {
+    name: "netcatty-remote-hosts",
+    type: "stdio",
+    command: "node",
+    args: [runtimePath],
+    env,
+  };
+}
+
+// ── Cleanup ──
+
+function cleanupScopedMetadata(chatSessionId) {
+  if (chatSessionId) {
+    scopedMetadata.delete(chatSessionId);
+  }
+}
+
+function cleanup() {
+  if (tcpServer) {
+    tcpServer.close();
+    tcpServer = null;
+    tcpPort = null;
+  }
+  scopedMetadata.clear();
+}
+
+module.exports = {
+  init,
+  setCommandBlocklist,
+  setCommandTimeout,
+  getCommandTimeoutMs,
+  setMaxIterations,
+  getMaxIterations,
+  setPermissionMode,
+  getPermissionMode,
+  checkCommandSafety,
+  updateSessionMetadata,
+  getScopedSessionIds,
+  getOrCreateHost,
+  buildMcpServerConfig,
+  cancelAllPtyExecs,
+  cleanupScopedMetadata,
+  cleanup,
+};

electron/bridges/portForwardingBridge.cjs

@@ -104,7 +104,7 @@ async function startPortForward(event, payload) {
     // can reject if the tunnel was killed during SSH handshake.
     let settled = false;
 
-    conn.on('ready', () => {
+    conn.once('ready', () => {
       console.log(`[PortForward] SSH connection ready for tunnel ${tunnelId}`);
 
       if (type === 'local') {
@@ -297,7 +297,7 @@ async function startPortForward(event, payload) {
       }
     });
 
-    conn.on('error', (err) => {
+    conn.once('error', (err) => {
       console.error(`[PortForward] SSH error:`, err.message);
       sendStatus('error', err.message);
       portForwardingTunnels.delete(tunnelId);
@@ -305,7 +305,7 @@ async function startPortForward(event, payload) {
       reject(err);
     });
 
-    conn.on('close', () => {
+    conn.once('close', () => {
       console.log(`[PortForward] SSH connection closed for tunnel ${tunnelId}`);
       const tunnel = portForwardingTunnels.get(tunnelId);
       // Capture the cancelled flag BEFORE cleanup deletes the entry.

electron/bridges/sftpBridge.cjs

@@ -518,7 +518,7 @@ async function connectThroughChainForSftp(event, options, jumpHosts, targetHost,
 
       // Connect this hop
       await new Promise((resolve, reject) => {
-        conn.on('ready', () => {
+        conn.once('ready', () => {
           console.log(`[SFTP Chain] Hop ${i + 1}/${jumpHosts.length}: ${hopLabel} connected`);
           resolve();
         });
@@ -531,7 +531,7 @@ async function connectThroughChainForSftp(event, options, jumpHosts, targetHost,
           console.error(`[SFTP Chain] Hop ${i + 1}/${jumpHosts.length}: ${hopLabel} error:`, err.message);
           reject(err);
         });
-        conn.on('timeout', () => {
+        conn.once('timeout', () => {
           console.error(`[SFTP Chain] Hop ${i + 1}/${jumpHosts.length}: ${hopLabel} timeout`);
           reject(new Error(`Connection timeout to ${hopLabel}`));
         });

electron/bridges/sshAuthHelper.cjs

@@ -123,24 +123,46 @@ async function findAllDefaultPrivateKeys(options = {}) {
   return results.filter(Boolean);
 }
 
+const WIN_SSH_AGENT_PIPE = "\\\\.\\pipe\\openssh-ssh-agent";
+
 /**
- * Check if Windows SSH Agent service is running
+ * Check if a Windows named pipe is connectable.
+ * fs.statSync is unreliable for named pipes (returns EBUSY even when the
+ * pipe is usable), so we attempt an actual net.connect() which is the
+ * authoritative check.
+ * @param {string} pipePath
+ * @param {number} [timeoutMs=1000]
+ * @returns {Promise<boolean>}
+ */
+function windowsPipeConnectable(pipePath, timeoutMs = 1000) {
+  const net = require("net");
+  return new Promise((resolve) => {
+    const socket = net.connect(pipePath);
+    let settled = false;
+    const finish = (ok) => {
+      if (settled) return;
+      settled = true;
+      try { socket.destroy(); } catch {}
+      resolve(ok);
+    };
+    socket.setTimeout(timeoutMs);
+    socket.once("connect", () => finish(true));
+    socket.once("timeout", () => finish(false));
+    socket.once("error", () => finish(false));
+  });
+}
+
+/**
+ * Check if an SSH agent is available on Windows.
+ * Probes the well-known named pipe via net.connect(). This supports any
+ * agent that provides the pipe — Bitwarden, 1Password, gpg-agent, etc.
  * @returns {Promise<boolean>}
  */
 function checkWindowsSshAgentRunning() {
-  return new Promise((resolve) => {
-    if (process.platform !== "win32") {
-      resolve(true);
-      return;
-    }
-    exec("sc query ssh-agent", (err, stdout) => {
-      if (err) {
-        resolve(false);
-        return;
-      }
-      resolve(stdout.includes("RUNNING"));
-    });
-  });
+  if (process.platform !== "win32") {
+    return Promise.resolve(true);
+  }
+  return windowsPipeConnectable(WIN_SSH_AGENT_PIPE);
 }
 
 /**

electron/bridges/sshBridge.cjs

@@ -140,29 +140,36 @@ async function findAllDefaultPrivateKeys() {
   return keys;
 }
 
+const WIN_SSH_AGENT_PIPE = "\\\\.\\pipe\\openssh-ssh-agent";
+
 /**
- * Check if Windows SSH Agent service is running
+ * Check if an SSH agent is available on Windows by connecting to the
+ * well-known named pipe. fs.statSync is unreliable for named pipes (returns
+ * EBUSY even when usable), so we use net.connect() as the authoritative check.
  * @returns {Promise<{ running: boolean, startupType: string | null, error: string | null }>}
  */
 function checkWindowsSshAgent() {
+  if (process.platform !== "win32") {
+    return Promise.resolve({ running: true, startupType: null, error: null });
+  }
+  const net = require("net");
   return new Promise((resolve) => {
-    if (process.platform !== "win32") {
-      resolve({ running: true, startupType: null, error: null });
-      return;
-    }
-    exec("sc query ssh-agent", (err, stdout) => {
-      if (err) {
-        resolve({ running: false, startupType: null, error: "SSH Agent service not found" });
-        return;
-      }
-      const running = stdout.includes("RUNNING");
-      const stopped = stdout.includes("STOPPED");
+    const socket = net.connect(WIN_SSH_AGENT_PIPE);
+    let settled = false;
+    const finish = (ok, error) => {
+      if (settled) return;
+      settled = true;
+      try { socket.destroy(); } catch {}
       resolve({
-        running,
-        startupType: stopped ? "stopped" : (running ? "running" : "unknown"),
-        error: null,
+        running: ok,
+        startupType: ok ? "running" : "stopped",
+        error: ok ? null : (error || "SSH Agent pipe not connectable"),
       });
-    });
+    };
+    socket.setTimeout(1000);
+    socket.once("connect", () => finish(true, null));
+    socket.once("timeout", () => finish(false, "SSH Agent pipe connect timeout"));
+    socket.once("error", (err) => finish(false, err.message));
   });
 }
 
@@ -170,7 +177,7 @@ async function getAvailableAgentSocket() {
   if (process.platform === "win32") {
     const agentStatus = await checkWindowsSshAgent();
     log("Windows SSH Agent check", agentStatus);
-    return agentStatus.running ? "\\\\.\\pipe\\openssh-ssh-agent" : null;
+    return agentStatus.running ? WIN_SSH_AGENT_PIPE : null;
   }
 
   return getSshAgentSocket();
@@ -416,17 +423,17 @@ async function connectThroughChain(event, options, jumpHosts, targetHost, target
 
       // Connect this hop
       await new Promise((resolve, reject) => {
-        conn.on('ready', () => {
+        conn.once('ready', () => {
           console.log(`[Chain] Hop ${i + 1}/${totalHops}: ${hopLabel} connected`);
           sendProgress(i + 1, totalHops + 1, hopLabel, 'connected');
           resolve();
         });
-        conn.on('error', (err) => {
+        conn.once('error', (err) => {
           console.error(`[Chain] Hop ${i + 1}/${totalHops}: ${hopLabel} error:`, err.message);
           sendProgress(i + 1, totalHops + 1, hopLabel, 'error');
           reject(err);
         });
-        conn.on('timeout', () => {
+        conn.once('timeout', () => {
           console.error(`[Chain] Hop ${i + 1}/${totalHops}: ${hopLabel} timeout`);
           reject(new Error(`Connection timeout to ${hopLabel}`));
         });
@@ -920,7 +927,7 @@ async function startSSHSession(event, options) {
 
     return new Promise((resolve, reject) => {
       const logPrefix = hasJumpHosts ? '[Chain]' : '[SSH]';
-      conn.on("ready", () => {
+      conn.once("ready", () => {
         console.log(`${logPrefix} ${options.hostname} ready`);
 
         // Cache the successful auth method
@@ -963,6 +970,10 @@ async function startSSHSession(event, options) {
               stream,
               chainConnections,
               webContentsId: event.sender.id,
+              // Store connection info for MCP host discovery
+              hostname: options.host || options.hostname || '',
+              username: options.username || '',
+              label: options.label || '',
             };
             sessions.set(sessionId, session);
 
@@ -1063,28 +1074,34 @@ async function startSSHSession(event, options) {
 
         safeSend(contents, "netcatty:exit", { sessionId, exitCode: 1, error: err.message });
         sessions.delete(sessionId);
+        sessionEncodings.delete(sessionId);
+        sessionDecoders.delete(sessionId);
         for (const c of chainConnections) {
           try { c.end(); } catch { }
         }
         reject(err);
       });
 
-      conn.on("timeout", () => {
+      conn.once("timeout", () => {
         console.error(`${logPrefix} ${options.hostname} connection timeout`);
         const err = new Error(`Connection timeout to ${options.hostname}`);
         const contents = event.sender;
         safeSend(contents, "netcatty:exit", { sessionId, exitCode: 1, error: err.message });
         sessions.delete(sessionId);
+        sessionEncodings.delete(sessionId);
+        sessionDecoders.delete(sessionId);
         for (const c of chainConnections) {
           try { c.end(); } catch { }
         }
         reject(err);
       });
 
-      conn.on("close", () => {
+      conn.once("close", () => {
         const contents = event.sender;
         safeSend(contents, "netcatty:exit", { sessionId, exitCode: 0 });
         sessions.delete(sessionId);
+        sessionEncodings.delete(sessionId);
+        sessionDecoders.delete(sessionId);
         for (const c of chainConnections) {
           try { c.end(); } catch { }
         }
@@ -1203,7 +1220,7 @@ async function execCommand(event, payload) {
     }, timeoutMs);
 
     conn
-      .on("ready", () => {
+      .once("ready", () => {
         conn.exec(payload.command, (err, stream) => {
           if (err) {
             clearTimeout(timer);
@@ -1227,13 +1244,13 @@ async function execCommand(event, payload) {
             });
         });
       })
-      .on("error", (err) => {
+      .once("error", (err) => {
         if (settled) return;
         clearTimeout(timer);
         settled = true;
         reject(err);
       })
-      .on("end", () => {
+      .once("end", () => {
         if (settled) return;
         clearTimeout(timer);
         settled = true;
@@ -1440,67 +1457,46 @@ async function getSessionPwd(event, payload) {
   const { sessionId } = payload;
   const session = sessions.get(sessionId);
 
-  if (!session || !session.stream || !session.conn) {
+  if (!session || !session.conn) {
     return { success: false, error: 'Session not found or not connected' };
   }
 
+  // Completely silent: uses a separate exec channel, nothing is printed
+  // in the interactive terminal. The exec channel and the interactive
+  // shell are both children of the same per-connection sshd process,
+  // so we find the shell as a sibling via $PPID.
   return new Promise((resolve) => {
-    const stream = session.stream;
-    const marker = `__PWD_${Date.now()}__`;
-    const timeout = setTimeout(() => {
-      stream.removeListener('data', onData);
+    const timer = setTimeout(() => {
       resolve({ success: false, error: 'Timeout getting pwd' });
-    }, 3000);
+    }, 5000);
 
-    let buffer = '';
+    // Find the interactive shell's cwd silently via a separate exec channel.
+    // Both the exec channel and the interactive shell share the same sshd
+    // parent ($PPID). We exclude our own PID ($$) to avoid reading our own cwd.
+    const cmd = `p=$(ps --ppid $PPID -o pid=,comm= 2>/dev/null | awk -v self=$$ '$1!=self && $2~/^(ba|z|fi|k|da)?sh$/{pid=$1}END{print pid}'); [ -n "$p" ] && readlink /proc/$p/cwd 2>/dev/null && exit 0; p=$(ps -e -o pid=,ppid=,comm= 2>/dev/null | awk -v pp=$PPID -v self=$$ '$1!=self && $2==pp && $3~/^(ba|z|fi|k|da)?sh$/{pid=$1}END{print pid}'); [ -n "$p" ] && readlink /proc/$p/cwd 2>/dev/null && exit 0; eval echo "~"`;
 
-    const onData = (data) => {
-      const str = data.toString();
-      buffer += str;
-
-      // We need to find the ACTUAL output markers, not the command echo
-      // The command echo looks like: echo '__PWD_xxx__S' && pwd && echo '__PWD_xxx__E'
-      // The actual output looks like: __PWD_xxx__S\n/path/to/dir\n__PWD_xxx__E
-      // 
-      // We look for the marker at the START of a line (after newline) to avoid the echo
-      const startMarkerRegex = new RegExp(`(?:^|[\\r\\n])${marker}S[\\r\\n]+`);
-      const endMarkerRegex = new RegExp(`[\\r\\n]${marker}E(?:[\\r\\n]|$)`);
-
-      const startMatch = buffer.match(startMarkerRegex);
-      const endMatch = buffer.match(endMarkerRegex);
-
-      if (startMatch && endMatch) {
-        const startIdx = buffer.indexOf(startMatch[0]) + startMatch[0].length;
-        const endIdx = buffer.indexOf(endMatch[0]);
-
-        if (startIdx <= endIdx) {
-          clearTimeout(timeout);
-          stream.removeListener('data', onData);
-
-          const pwdOutput = buffer.slice(startIdx, endIdx).trim();
-          console.log('[getSessionPwd] pwdOutput:', JSON.stringify(pwdOutput));
-
-          // The pwd output should be a valid absolute path
-          if (pwdOutput && pwdOutput.startsWith('/')) {
-            console.log('[getSessionPwd] Success, cwd:', pwdOutput);
-            resolve({ success: true, cwd: pwdOutput });
-          } else {
-            console.log('[getSessionPwd] Failed - invalid path:', pwdOutput);
-            resolve({ success: false, error: 'Invalid pwd output' });
-          }
-        }
+    session.conn.exec(cmd, (err, stream) => {
+      if (err) {
+        clearTimeout(timer);
+        log('[getSessionPwd] exec error:', err.message);
+        resolve({ success: false, error: err.message });
+        return;
       }
-    };
-
-    stream.on('data', onData);
-
-    // Send pwd command with short unique markers
-    // Using 'S' and 'E' as suffixes to make markers shorter
-    // After the command, send ANSI escape sequences to clear the output lines:
-    // \x1b[1A = move cursor up 1 line, \x1b[2K = clear entire line
-    // Clear 4 lines: the command echo, START marker, pwd output, and END marker
-    const clearLines = '\\x1b[1A\\x1b[2K\\x1b[1A\\x1b[2K\\x1b[1A\\x1b[2K\\x1b[1A\\x1b[2K';
-    stream.write(` echo '${marker}S' && pwd && echo '${marker}E' && printf '${clearLines}'\n`);
+      let out = '';
+      let errOut = '';
+      stream.on('data', (d) => { out += d.toString(); });
+      stream.stderr?.on('data', (d) => { errOut += d.toString(); });
+      stream.on('close', (code) => {
+        clearTimeout(timer);
+        const path = out.trim();
+        log('[getSessionPwd]', { stdout: path, stderr: errOut.trim(), exitCode: code });
+        if (path && path.startsWith('/')) {
+          resolve({ success: true, cwd: path });
+        } else {
+          resolve({ success: false, error: 'Could not determine cwd' });
+        }
+      });
+    });
   });
 }